APA引文
Fennell, D. A. (2002). Ecotourism programme planning. CABI Pub..
Chicago Style (17th ed.) Citation
Fennell, David A. Ecotourism Programme Planning. Wallingford, Oxon, UK ; New York, NY: CABI Pub., 2002.
MLA引文
Fennell, David A. Ecotourism Programme Planning. CABI Pub., 2002.
警告：這些引文格式不一定是100％准確.