APA aipamena

Davidson, R. (1994). Tourism (2nd.). Pitman.

Chicago Style aipamena

Davidson, Rob. Tourism. 2nd. London: Pitman, 1994.

MLA aipamena

Davidson, Rob. Tourism. 2nd. Pitman, 1994.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.