APA (7th ed.) Citation

Shirkey, Z. C. (2009). Is this a private fight or can anybody join?: The spread of interstate war. Ashgate.

Chicago Style (17th ed.) Citation

Shirkey, Zachary C. Is This a Private Fight or Can Anybody Join?: The Spread of Interstate War. Farnham, England: Ashgate, 2009.

MLA (9th ed.) Citation

Shirkey, Zachary C. Is This a Private Fight or Can Anybody Join?: The Spread of Interstate War. Ashgate, 2009.

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