APA aipamena

Hillman,Jimmye S. (1978). Nontariff agricultural trade barriers. University of Nebraska Press.

Chicago Style aipamena

Hillman,Jimmye S. Nontariff Agricultural Trade Barriers. London: University of Nebraska Press, 1978.

MLA aipamena

Hillman,Jimmye S. Nontariff Agricultural Trade Barriers. University of Nebraska Press, 1978.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.