APA-ийн эшлэл(7 дахь хэвлэлт)

Tontz, R. L. (1966). Foreign agricultural trade: Selected readings ([1st ed.].). Iowa State University Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Tontz, Robert L. Foreign Agricultural Trade: Selected Readings. [1st ed.]. Ames: Iowa State University Press, 1966.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Tontz, Robert L. Foreign Agricultural Trade: Selected Readings. [1st ed.]. Iowa State University Press, 1966.