R C Gifford. (1992). FAO agricultural servicies bulletin Vol.99.1: Agricultural engineering in development mechanization strategy formulation: Vol.1: concepts and principles. Rome: FAO.
Trích dẫn kiểu ChicagoR C Gifford. FAO Agricultural Servicies Bulletin Vol.99.1: Agricultural Engineering in Development Mechanization Strategy Formulation: Vol.1: Concepts and Principles. Rome: FAO, 1992.
MLA引文R C Gifford. FAO Agricultural Servicies Bulletin Vol.99.1: Agricultural Engineering in Development Mechanization Strategy Formulation: Vol.1: Concepts and Principles. Rome: FAO, 1992.
警告：这些引文格式不一定是100％准确.