APA引文

Gurstelle, W. (2014). Defending your castle: Build catapults, crossbows, moats, bulletproof shields, and more defensive devices. Chicago Review Press, Incorporated.

Chicago Style (17th ed.) Citation

Gurstelle, William. Defending Your Castle: Build Catapults, Crossbows, Moats, Bulletproof Shields, and More Defensive Devices. Chicago, Illinois: Chicago Review Press, Incorporated, 2014.

MLA引文

Gurstelle, William. Defending Your Castle: Build Catapults, Crossbows, Moats, Bulletproof Shields, and More Defensive Devices. Chicago Review Press, Incorporated, 2014.

警告：這些引文格式不一定是100％准確.