APA aipamena

Elkan, W. (1973). An Introduction to development economics. New York: Penguin Books.

Chicago Style aipamena

Elkan, Walter. An Introduction to Development Economics. New York: Penguin Books, 1973.

MLA aipamena

Elkan, Walter. An Introduction to Development Economics. New York: Penguin Books, 1973.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.