APA (7th ed.) Zitazioa
Buckley, R. (2003). Case studies in ecotourism. CABI Pub..
Chicago Style (17th ed.) Zitazioa
Buckley, Ralf. Case Studies in Ecotourism. Wallingford, Oxon, UK ; Cambridge, MA, USA: CABI Pub., 2003.
MLA (9th ed.) Zitazioa
Buckley, Ralf. Case Studies in Ecotourism. CABI Pub., 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.