Drogat, N. (1962). The challenge of hunger. Newman Press.
Chicago Style aipamenaDrogat, Nol͡. The Challenge of Hunger. Westminster, Md.: Newman Press, 1962.
MLA aipamenaDrogat, Nol͡. The Challenge of Hunger. Newman Press, 1962.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.