APA (7th ed.) Citation

Owen & Maurer. (2013). No easy day: The only first-hand account of the mission that killed Osama Bin Laden. Penguin Books.

Chicago Style (17th ed.) Citation

Owen and Maurer. No Easy Day: The Only First-hand Account of the Mission That Killed Osama Bin Laden. London: Penguin Books, 2013.

MLA (8th ed.) Citation

Owen and Maurer. No Easy Day: The Only First-hand Account of the Mission That Killed Osama Bin Laden. Penguin Books, 2013.

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