APA (7th ed.) Zitazioa

Bell, . C. (1928). Civilization: An essay. Penguin.

Chicago Style (17th ed.) Zitazioa

Bell, Clive. Civilization: An Essay. Middlesex: Penguin, 1928.

MLA (9th ed.) Zitazioa

Bell, Clive. Civilization: An Essay. Penguin, 1928.