Dar, W. D. (1990). The interaction between research and extension in the context of farming systems development. Quezon City,Philippines: Agricultural Training Institute.
Trích dẫn kiểu ChicagoDar, William D. The Interaction between Research and Extension in the Context of Farming Systems Development. Quezon City,Philippines: Agricultural Training Institute, 1990.
ציטוט MLADar, William D. The Interaction between Research and Extension in the Context of Farming Systems Development. Quezon City,Philippines: Agricultural Training Institute, 1990.
אזהרה: ציטוטים אלה לעיתים לא מדויקים ב 100%.