APA aipamena

Guess,George M. (1987). The politics of United States foreign aid. Croom Helm.

Chicago Style aipamena

Guess,George M. The Politics of United States Foreign Aid. London: Croom Helm, 1987.

MLA aipamena

Guess,George M. The Politics of United States Foreign Aid. Croom Helm, 1987.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.