Gaya APA
Wood, M, E. (2002).
ECOTOURISM: PRINCIPLES, PRACTICES & POLICIES FOR SUSTAINABILITY (1).
United States of America:
United Nations.
Gaya MLA
Wood, Megan, Epler.
"ECOTOURISM: PRINCIPLES, PRACTICES & POLICIES FOR SUSTAINABILITY".
1
United States of America:
United Nations,
2002.
eBook.