APA (7th ed.) Zitazioa

Richards, J. (1962). An introduction to modern architecture. Penguin.

Chicago Style (17th ed.) Zitazioa

Richards, J.M. An Introduction to Modern Architecture. Middlesex, England: Penguin, 1962.

MLA (9th ed.) Zitazioa

Richards, J.M. An Introduction to Modern Architecture. Penguin, 1962.