APA-ийн эшлэл(7 дахь хэвлэлт)

E., H. (1967). Trends in the World Demand for Primary Products & Their Impli-cations for the Exports of De-veloping Countries. The Institute of National Planning.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

E., Hammam. Trends in the World Demand for Primary Products & Their Impli-cations for the Exports of De-veloping Countries. Cairo: The Institute of National Planning, 1967.

MLA -ийн эшлэл (9 дэх хэвлэлт)

E., Hammam. Trends in the World Demand for Primary Products & Their Impli-cations for the Exports of De-veloping Countries. The Institute of National Planning, 1967.

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