APA (7th ed.) Citation

Popenker & William. (2004). Assault rifle. Crowood.

Chicago Style (17th ed.) Citation

Popenker and William. Assault Rifle. Ramsbury: Crowood, 2004.

MLA (8th ed.) Citation

Popenker and William. Assault Rifle. Crowood, 2004.

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