APA Style Citation

Michael Porter Quotes. (n.d.). BrainyQuote.com. Retrieved June 27, 2019, from BrainyQuote.com Web site: https://www.brainyquote.com/quotes/michael_porter_391591

Chicago Style Citation

Michael Porter Quotes. BrainyQuote.com, BrainyMedia Inc, 2019. https://www.brainyquote.com/quotes/michael_porter_391591, accessed June 27, 2019.

MLA Style Citation

"Michael Porter Quotes." BrainyQuote.com. BrainyMedia Inc, 2019. 27 June 2019. https://www.brainyquote.com/quotes/michael_porter_391591