APA (7th ed.) Zitazioa

Needler, M. C. (1964). Political systems of Latin America. D. van Nostrand.

Chicago Style (17th ed.) Zitazioa

Needler, Martin C. Political Systems of Latin America. Princeton: D. van Nostrand, 1964.

MLA (9th ed.) Zitazioa

Needler, Martin C. Political Systems of Latin America. D. van Nostrand, 1964.