FAO. Human and draught animal power in crop production: Proceedings of the harare workshop, Zimbabwe 18-22 Januari 1993. Rome.
Chicago Style (17th ed.) CitationFAO. Human and Draught Animal Power in Crop Production: Proceedings of the Harare Workshop, Zimbabwe 18-22 Januari 1993. Rome.
MLA引文FAO. Human and Draught Animal Power in Crop Production: Proceedings of the Harare Workshop, Zimbabwe 18-22 Januari 1993. Rome.
警告：這些引文格式不一定是100％准確.