Poehlman, J. M. (1977). Breeding field crops. Philippines: AVI.
Chicago Style aipamenaPoehlman, John Milton. Breeding Field Crops. Philippines: AVI, 1977.
MLA aipamenaPoehlman, John Milton. Breeding Field Crops. Philippines: AVI, 1977.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.