R C Gifford. (1991). FAO agricultural servicies bulletin Vol.45: Agricultural mechanization in development: guidelines for stategy formulation. Rome: FAO.
Chicago Style aipamenaR C Gifford. FAO Agricultural Servicies Bulletin Vol.45: Agricultural Mechanization in Development: Guidelines for Stategy Formulation. Rome: FAO, 1991.
MLA aipamenaR C Gifford. FAO Agricultural Servicies Bulletin Vol.45: Agricultural Mechanization in Development: Guidelines for Stategy Formulation. Rome: FAO, 1991.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.