Gaya APA
Ballantyne, R., Packer, J. (2013).
International Handbook on Ecotourism (First Edition).
United Kingdom:
Edward Elgar Publishing Limited.
Gaya MLA
Ballantyne, Roy., Packer, Jan.
"International Handbook on Ecotourism".
First Edition
United Kingdom:
Edward Elgar Publishing Limited,
2013.
eBook.