R A.J Roberts. (1991). FAO agricultural servicies bulletin; N86: Strategies for crop insurance planning. Rome: FAO.
Chicago Style aipamenaR A.J Roberts. FAO Agricultural Servicies Bulletin; N86: Strategies for Crop Insurance Planning. Rome: FAO, 1991.
MLA aipamenaR A.J Roberts. FAO Agricultural Servicies Bulletin; N86: Strategies for Crop Insurance Planning. Rome: FAO, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.