APA-viite (7. p.)
ebrary, Inc, Aylward, B. A., & Lutz, E. (2003). Nature tourism, conservation, and development in Kwazulu-Natal, South Africa. World Bank.
Chicago-viite (17. p.)
ebrary, Inc, Bruce A. Aylward, ja Ernst Lutz. Nature Tourism, Conservation, and Development in Kwazulu-Natal, South Africa. Washington, DC: World Bank, 2003.
MLA-viite (9. p.)
ebrary, Inc, et al. Nature Tourism, Conservation, and Development in Kwazulu-Natal, South Africa. World Bank, 2003.
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