APA (7th ed.) Citation

Petzal & Boujaily. (2013). Gun: 100 greatest firearms. Weldon Owen.

Chicago Style (17th ed.) Citation

Petzal and Boujaily. Gun: 100 Greatest Firearms. San Francisco, CA: Weldon Owen, 2013.

MLA (8th ed.) Citation

Petzal and Boujaily. Gun: 100 Greatest Firearms. Weldon Owen, 2013.

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