APA Style Citation

John Carmack Quotes. (n.d.). BrainyQuote.com. Retrieved July 21, 2019, from BrainyQuote.com Web site: https://www.brainyquote.com/quotes/john_carmack_775986

Chicago Style Citation

John Carmack Quotes. BrainyQuote.com, BrainyMedia Inc, 2019. https://www.brainyquote.com/quotes/john_carmack_775986, accessed July 21, 2019.

MLA Style Citation

"John Carmack Quotes." BrainyQuote.com. BrainyMedia Inc, 2019. 21 July 2019. https://www.brainyquote.com/quotes/john_carmack_775986