Cita APA (7th ed.)
Fennell, D. A. (2002). Ecotourism programme planning. CABI Pub..
Cita Chicago (17th ed.)
Fennell, David A. Ecotourism Programme Planning. Wallingford, Oxon, UK ; New York, NY: CABI Pub., 2002.
Cita MLA (9th ed.)
Fennell, David A. Ecotourism Programme Planning. CABI Pub., 2002.
Atenció: Aquestes cites poden no estar 100% correctes.