APA aipamena

R A.J Roberts. (1989). FAO agricultural servicies bulletin; N78: Crop insurance. Rome: FAO.

Chicago Style aipamena

R A.J Roberts. FAO Agricultural Servicies Bulletin; N78: Crop Insurance. Rome: FAO, 1989.

MLA aipamena

R A.J Roberts. FAO Agricultural Servicies Bulletin; N78: Crop Insurance. Rome: FAO, 1989.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.