Shaffer, H. G. (1977). Soviet agriculture: An assessment of its contributions to economic development. Praeger.
Chicago Style aipamenaShaffer, Harry G. Soviet Agriculture: An Assessment of Its Contributions to Economic Development. New York: Praeger, 1977.
MLA aipamenaShaffer, Harry G. Soviet Agriculture: An Assessment of Its Contributions to Economic Development. Praeger, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.