APA aipamena

Ryan,W. (1977). Price theory. Macmillian & Co. Ltd.

Chicago Style aipamena

Ryan,W. Price Theory. Delhi: Macmillian & Co. Ltd, 1977.

MLA aipamena

Ryan,W. Price Theory. Macmillian & Co. Ltd, 1977.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.