APA aipamena

Gardner, E. S. (1955). The case of the backward mule. Heinemann.

Chicago Style aipamena

Gardner, Erle Stanley. The Case of the Backward Mule. London: Heinemann, 1955.

MLA aipamena

Gardner, Erle Stanley. The Case of the Backward Mule. Heinemann, 1955.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.