RAju, G. (2009). Ecotourism guidance for tour operator. Mangalam Publ.
Chicago Style aipamenaRAju, G.P. Ecotourism Guidance for Tour Operator. Delhi: Mangalam Publ, 2009.
MLA aipamenaRAju, G.P. Ecotourism Guidance for Tour Operator. Mangalam Publ, 2009.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.