APA (7th ed.) Citation

Holiday, R. (2017). Ego is the enemy. Profile Books.

Chicago Style (17th ed.) Citation

Holiday, Ryan. Ego Is the Enemy. United Kingdon: Profile Books, 2017.

MLA (9th ed.) Citation

Holiday, Ryan. Ego Is the Enemy. Profile Books, 2017.

Warning: These citations may not always be 100% accurate.