APA (7th ed.) Citation

Mayer, J., & Swift, T. (2009). Battle studies. Columbia.

Chicago Style (17th ed.) Citation

Mayer, John, and Taylor Swift. Battle Studies. New York: Columbia, 2009.

MLA (8th ed.) Citation

Mayer, John, and Taylor Swift. Battle Studies. Columbia, 2009.

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