APA Style Citation

Twentieth Century Quotes. (n.d.). BrainyQuote.com. Retrieved July 21, 2019, from BrainyQuote.com Web site: https://www.brainyquote.com/topics/twentieth_century

Chicago Style Citation

Twentieth Century Quotes. BrainyQuote.com, BrainyMedia Inc, 2019. https://www.brainyquote.com/topics/twentieth_century, accessed July 21, 2019.

MLA Style Citation

"Twentieth Century Quotes." BrainyQuote.com. BrainyMedia Inc, 2019. 21 July 2019. https://www.brainyquote.com/topics/twentieth_century