Singh, I. J. (1977). Elements of farm management economics. Affiliated East West.
Chicago Style aipamenaSingh, I J. Elements of Farm Management Economics. New Delhi: Affiliated East West, 1977.
MLA aipamenaSingh, I J. Elements of Farm Management Economics. Affiliated East West, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.