APA (7th ed.) Zitazioa

Gheddo, P. (1973). Why is the third world poor ? Orbis Books.

Chicago Style (17th ed.) Zitazioa

Gheddo, Piero. Why Is the Third World Poor ? Nueva York: Orbis Books, 1973.

MLA (9th ed.) Zitazioa

Gheddo, Piero. Why Is the Third World Poor ? Orbis Books, 1973.