Romberger, J. (1978). Biosystematics in Agriculture. John Wiley and Sons.
Chicago Style aipamenaRomberger, J.A. Biosystematics in Agriculture. New York: John Wiley and Sons, 1978.
MLA aipamenaRomberger, J.A. Biosystematics in Agriculture. John Wiley and Sons, 1978.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.