Black, R. E., & Crabtree, A. E. (2007). Quality assurance and certification in ecotourism.
Chicago Edition CitationBlack, Rosemary; Editor, and Alice; Editor Crabtree. Quality Assurance and Certification in Ecotourism. New York, CABI Publishing, 2007.
MLA Edition CitationBlack, Rosemary; Editor, and Alice; Editor Crabtree. Quality Assurance and Certification in Ecotourism. 2007.
Warning: These citations may not always be 100% accurate.