APA (7. basım) Alıntı

Fennell, D. A. (2020). Ecotourism (Fifth edition.). Routledge.

Chicago Style (17. basım) Atıf

Fennell, David A. Ecotourism. Fifth edition. London, UK ; New York, USA: Routledge, 2020.

MLA (9th ed.) Atıf

Fennell, David A. Ecotourism. Fifth edition. Routledge, 2020.