APA (7th ed.) Citation

Slater, D. (1988). Why do wars happen? Gloucester Press.

Chicago Style (17th ed.) Citation

Slater, Don. Why Do Wars Happen? London: Gloucester Press, 1988.

MLA (9th ed.) Citation

Slater, Don. Why Do Wars Happen? Gloucester Press, 1988.

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