APA-ийн эшлэл(7 дахь хэвлэлт)
Yang, W. (1965). Methods of farmmanagement investigations for improving farm productivity: <Rev.ed.>. Food and Agriculture Organization of the United Nations.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)
Yang, W.J. Methods of Farmmanagement Investigations for Improving Farm Productivity: <Rev.ed.>. Rome: Food and Agriculture Organization of the United Nations, 1965.
MLA -ийн эшлэл (9 дэх хэвлэлт)
Yang, W.J. Methods of Farmmanagement Investigations for Improving Farm Productivity: <Rev.ed.>. Food and Agriculture Organization of the United Nations, 1965.
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