APA aipamena

Clawson,Marion. (1964). Natural resources and international development. The Johns Hopkins Press.

Chicago Style aipamena

Clawson,Marion. Natural Resources and International Development. Baltimore: The Johns Hopkins Press, 1964.

MLA aipamena

Clawson,Marion. Natural Resources and International Development. The Johns Hopkins Press, 1964.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.