APA Style Citation

Isaac Newton Quotes. (n.d.). BrainyQuote.com. Retrieved August 18, 2019, from BrainyQuote.com Web site: https://www.brainyquote.com/quotes/isaac_newton_705819

Chicago Style Citation

Isaac Newton Quotes. BrainyQuote.com, BrainyMedia Inc, 2019. https://www.brainyquote.com/quotes/isaac_newton_705819, accessed August 18, 2019.

MLA Style Citation

"Isaac Newton Quotes." BrainyQuote.com. BrainyMedia Inc, 2019. 18 August 2019. https://www.brainyquote.com/quotes/isaac_newton_705819