Millikan, M. F., & Hapgood, D. (1967). No Easy Harvest: The Dilemma of Agriculture in Underdeveloped Countries. Boston: Little, Brown and Co..
Chicago Style aipamenaMillikan, Max F., và David Hapgood. No Easy Harvest: The Dilemma of Agriculture in Underdeveloped Countries. Boston: Little, Brown and Co., 1967.
MLA aipamenaMillikan, Max F., và David Hapgood. No Easy Harvest: The Dilemma of Agriculture in Underdeveloped Countries. Boston: Little, Brown and Co., 1967.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.