APA aipamena

Sarna. (2010). Formers cruises and ports of call (7.). Wiley.

Chicago Style aipamena

Sarna. Formers Cruises and Ports of Call. 7. Wiley, 2010.

MLA aipamena

Sarna. Formers Cruises and Ports of Call. 7. Wiley, 2010.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.