Cita APA (7th ed.)
ebrary, Inc, & Weaver, D. B. (2001). The encyclopedia of ecotourism. CABI Pub..
Cita Chicago (17th ed.)
ebrary, Inc, i David B. Weaver. The Encyclopedia of Ecotourism. Oxon, UK ; New York, NY: CABI Pub., 2001.
Cita MLA (9th ed.)
ebrary, Inc, i David B. Weaver. The Encyclopedia of Ecotourism. CABI Pub., 2001.
Atenció: Aquestes cites poden no estar 100% correctes.