Cita APA

Black, R. 1., & Crabtree, A. (2007). Quality assurance and certification in ecotourism. Oxfordshire, UK: CABI.

Citación estilo Chicago

Black, Rosemary 1955-, y Alice Crabtree. Quality Assurance and Certification in Ecotourism. Oxfordshire, UK: CABI, 2007.

Cita MLA

Black, Rosemary 1955-, y Alice Crabtree. Quality Assurance and Certification in Ecotourism. Oxfordshire, UK: CABI, 2007.

Precaución: Estas citas no son 100% exactas.