APA (7th ed.) Zitazioa
Hirschfeld, G. (1973). The people: Growth and Survival. First cycle. Aldine Published for the Council for the Study of Mankind.
Chicago Style (17th ed.) Zitazioa
Hirschfeld, Gerhard. The People: Growth and Survival. First Cycle. Chicago: Aldine Published for the Council for the Study of Mankind, 1973.
MLA (9th ed.) Zitazioa
Hirschfeld, Gerhard. The People: Growth and Survival. First Cycle. Aldine Published for the Council for the Study of Mankind, 1973.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.