R C Gifford. (1991). FAO agricultural servicies bulletin Vol.45: Agricultural mechanization in development: guidelines for stategy formulation. Rome: FAO.
استشهاد بنمط شيكاغوR C Gifford. FAO Agricultural Servicies Bulletin Vol.45: Agricultural Mechanization in Development: Guidelines for Stategy Formulation. Rome: FAO, 1991.
MLA استشهادR C Gifford. FAO Agricultural Servicies Bulletin Vol.45: Agricultural Mechanization in Development: Guidelines for Stategy Formulation. Rome: FAO, 1991.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.