APA aipamena

Carlsen, J., & Butler, R. (2014). Island Tourism: Sustainable Perspectives. CABI.

Chicago Style aipamena

Carlsen, Jack, và Richard Butler. Island Tourism: Sustainable Perspectives. CABI, 2014.

MLA aipamena

Carlsen, Jack, và Richard Butler. Island Tourism: Sustainable Perspectives. CABI, 2014.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.