Gaya APA
HONEY, M., LIN, L, C.
(2002).
Ecotourism & Certification: Setting Standards in Practice
.
Island:
London.
Gaya MLA
HONEY, Martha., LIN, Lee, Chor.
"Ecotourism & Certification: Setting Standards in Practice".
Island:
London,
2002.
Buku Teks.