APA aipamena

Rojas, C. (1999). Ecologically dangerous and economically uncertain tourism.

Chicago Style aipamena

Rojas, Carmen. Ecologically Dangerous and Economically Uncertain Tourism. 1999.

MLA aipamena

Rojas, Carmen. Ecologically Dangerous and Economically Uncertain Tourism. 1999.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.