Appleman, P. (2001). Darwin. New York, NY: Norton.

Bellis, M. (2019, September 27). A history of the automobile. Retrieved from https://www.thoughtco.com/who-invented-the-car-4059932

Casden, E. (n.d.). Italian Futurism: An introduction. Retrieved from https://www.khanacademy.org/humanities/art-1010/cubism-early-abstraction/art-great-war/a/italian-futurism-an-introduction

Cognard-Black, J. (2019, December 24). Professionalism. Retrieved from https://www.encyclopedia.com/history/culture-magazines/professionalism

Cole, J., Symes, C., Coffin, J. G., & Stacey, R. C. (2012). Western civilizations: Their history and their culture. New York, NY: W .W. Norton & Company.

Corbett, P. S., Janssen, V., Lund, J. M., Pfannestiel, T. J., & Vickery, P. S. (2017). U.S. history. Houston, TX: OpenStax, Rice University.

Dawkins, R. (2016). The selfish gene. Oxford, UK: Oxford University Press.

Defining capitalism, communism, fascism, socialism. (n.d.). Retrieved from https://www.webpages.uidaho.edu/engl_258/lecture%20notes/capitalism%20etc%20defined.htm

Disease and sanitation. (n.d.). Retrieved from http://www.sewerhistory.org/photosgraphics/disease-and-sanitation

Engels, F. (1847). The principles of communism. Retrieved from https://www.marxists.org/archive/marx/works/1847/11/prin-com.htm

Fancher, R. E. (1979). Pioneers of psychology. New York, NY: Norton.

Feder, M. (n.d.). From alchemy to chemistry. Retrieved from https://www.khanacademy.org/partner-content/big-history-project/stars-and-elements/other-material3/a/from-alchemy-to-chemistry

Frey-Rohn, L., & Engreen, F. E. (1990). From Freud to Jung: A comparative study of the psychology of the unconscious. Boston, MA: Shambhala.

History of evolution. (n.d.). Retrieved from https://www.iep.utm.edu/evolutio/

Hutchison, E. D. (2003). Dimensions of human behavior. Thousand Oaks, CA: SAGE.

Industrial Revolution. (n.d.). Retrieved from https://schoolshistory.org.uk/topics/british-history/industrial-revolution

Introduction to anthropology. (2003). Retrieved from https://individual.utoronto.ca/boyd/anthro7.htm

Kumar, S. (2019, October 9). 7 technologies that can change the future of shipbuilding. Retrieved from https://www.marineinsight.com/future-shipping/shipbuilding-technologies/

Lambert, T. (2019). A brief history of communication. Retrieved from http://www.localhistories.org/communications.html

Newmeyer, F. J. (n.d.). The history of modern linguistics. Retrieved from https://www.linguisticsociety.org/resource/history-modern-linguistics

Online steamboat museum. (n.d.). Retrieved from https://steamboats.com/museum/engineroom.html

Richardson, J., & Leiter, B. (2006). Nietzsche. New York, NY: Oxford University Press.

Riis, J. (n.d.). How the other half lives. Retrieved from https://www.historyonthenet.com/authentichistory/1898-1913/2-progressivism/2-riis

Rogers, K. (2009). Beyond Darwin: Eugenics, Social Darwinism, and the social theory of the natural selection of humans. Retrieved from http://blogs.britannica.com/2009/02/beyond-darwin-eugenics-social-darwinism-and-the-social-theory-of-the-natural-selection-of-humans

Steam power during the Industrial Revolution. (n.d.). Retrieved from https://en.wikipedia.org/wiki/Steam_power_during_the_Industrial_Revolution

The history of sociology. (n.d.). Retrieved from https://courses.lumenlearning.com/sociology/chapter/the-history-of-sociology

The progressives. (n.d.). Retrieved from https://www.khanacademy.org/humanities/us-history/rise-to-world-power/age-of-empire/v/the-progressives

Stangor, C., & Walinga, J. (2010). The evolution of psychology: History, approaches, and questions. In Introduction to psychology (1st Canadian edition). Minneapolis, MN: Open Textbook Library, Table 1.3. Retrieved from https://opentextbc.ca/introductiontopsychology/chapter/1-2-the-evolution-of-psychology-history-approaches-and-questions/#skiptable1.3

Wilde, R. (2019, August 22). Steam in the Industrial Revolution. Retrieved from http://thoughtco.com/steam-in-the-industrial-revolution-1221643

Zardo, N. (1987). Pasteur: The discover of germs. Perini Journal, 43. Retrieved from http://www.perinijournal.it/Items/en-US/Articoli/PJL-43/Pasteur-the-discovery-of-germs

Zimmermann, K. A., & Emspak, J. (2017, June 27). Internet history timeline. Retrieved from https://www.livescience.com/20727-internet-history.html