APA (7th ed.) Zitazioa

(1973). Primitive worlds: People lost in time (ed.). National geographical society.

Chicago Style (17th ed.) Zitazioa

Primitive Worlds: People Lost in Time. ed. Washington: National geographical society, 1973.

MLA (9th ed.) Zitazioa

Primitive Worlds: People Lost in Time. ed. National geographical society, 1973.