APA Format
; Stronza, Amanda; Durham, William H.. (2008). Ecotourism at work in the Americas. Inggris : CABI Head Office
MLA Format
; Stronza, Amanda; Durham, William H.. Ecotourism at work in the Americas. Inggris : CABI Head Office, 2008
Chicago Format
; Stronza, Amanda; Durham, William H.. Ecotourism at work in the Americas. Inggris : CABI Head Office, 2008
Australian/Harvard Format
; Stronza, Amanda; Durham, William H.. 2008. Ecotourism at work in the Americas. CABI Head Office Inggris