• Adler, Mortimer Jerome. The Difference of Man and the Difference It Makes. New York: Holt, Rinehart and Winston, 1967.
• Bohannon, John. “Science Prodigy Zhao Bowen Wants to Crack a Genetic Mystery: What Makes Some People So Smart?” Wired.com. Conde Nast Digital, 14 July 2013. Web.
• “Animals and Human Experience the Same Emotions.” Animals and Human Experience the Same Emotions. N.p., n.d. Web. 24 July 2013. http://phys.org/news6250.html
• “Are Humans Just Animals?” Evolving Thoughts. N.p., n.d. Web. 24 July 2013. http://evolvingthoughts.net/2013/07/are-humans-just-animals/
• “How Are Humans Different from Animals?” Bible Creation Lessons. N.p., n.d. Web. 24 July 2013.
• http://www.creationmoments.com/radio/transcripts/how-are-humans-different-animals
• “Human Beings Are Animals.” Human Beings Are Animals. N.p., n.d. Web. 24 July 2013. http://www2.franciscan.edu/plee/human_beings_are_animals.htm
• “Scientists Proclaim Animal and Human Consciousness the Same.” Care2. N.p., n.d. Web. 24 July 2013. http://www.care2.com/causes/scientists-proclaim-animal-and-human-consciousness-the-same.html
• “Tough Questions Answered.” Tough Questions Answered RSS. N.p., n.d. Web. 24 July 2013.
• http://www.toughquestionsanswered.org/2009/01/07/how-are-human-beings-different-from-other-animals/