APA (7th ed.) Citation

Snooks, G. D. (1998). The laws of history. Routledge.

Chicago Style (17th ed.) Citation

Snooks, G. D. The Laws of History. London ; New York: Routledge, 1998.

MLA (9th ed.) Citation

Snooks, G. D. The Laws of History. Routledge, 1998.