APA (7th ed.) Zitazioa
Halpern, B. (1988). The first historians. Pennsylvania State University Press.
Chicago Style (17th ed.) Zitazioa
Halpern, Baruch. The First Historians. Pennsylvania: Pennsylvania State University Press, 1988.
MLA (9th ed.) Zitazioa
Halpern, Baruch. The First Historians. Pennsylvania State University Press, 1988.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.