Citazione Stile APA (7a Edizione)

Hammerton, J. A., & Hammerton, J. A. (1925). The world's great books in outline. Amalgamated Press.

Citazione stile Chigago Style (17a edizione)

Hammerton, J. A., e J. A. Hammerton. The World's Great Books in Outline. [Place of publication not identified]: Amalgamated Press, 1925.

Citatione MLA (9a ed.)

Hammerton, J. A., e J. A. Hammerton. The World's Great Books in Outline. Amalgamated Press, 1925.