Yang, W. (1965). Methods Of Farm Management Investigations For Improving Farm Productivity (Revised Edition.). FAO.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Yang, W.Y. Methods Of Farm Management Investigations For Improving Farm Productivity. Revised Edition. Rome: FAO, 1965.
MLA -ийн эшлэл (9 дэх хэвлэлт)Yang, W.Y. Methods Of Farm Management Investigations For Improving Farm Productivity. Revised Edition. FAO, 1965.