Lua APA (7ú heag.)

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

Lua i Stíl Chicago (17ú heag.)

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

Lua MLA (9ú heag.)

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

Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.