APA Style Citation

Human Existence Quotes. (n.d.). BrainyQuote.com. Retrieved July 15, 2019, from BrainyQuote.com Web site: https://www.brainyquote.com/topics/human_existence_2

Chicago Style Citation

Human Existence Quotes. BrainyQuote.com, BrainyMedia Inc, 2019. https://www.brainyquote.com/topics/human_existence_2, accessed July 15, 2019.

MLA Style Citation

"Human Existence Quotes." BrainyQuote.com. BrainyMedia Inc, 2019. 15 July 2019. https://www.brainyquote.com/topics/human_existence_2