KIPPS, M. S., & WOLFE, T. K. (2004). PRODUCTION OF FIELD CROPS: A TEXTBOOK OF AGRONOMY.
Chicago Style aipamenaKIPPS, M S., and T K. WOLFE. PRODUCTION OF FIELD CROPS: A TEXTBOOK OF AGRONOMY. NEW DELHI, SRISHTI BOOK DISTRIBUTERS, 2004.
MLA aipamenaKIPPS, M S., and T K. WOLFE. PRODUCTION OF FIELD CROPS: A TEXTBOOK OF AGRONOMY. 2004.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.