Cita APA

Hill, J. 1., & Gale, T. (2009). Ecotourism and environmental sustainability: Principles and practice. Farnham, England ; Burlington, VT: Ashgate.

Citación estilo Chicago

Hill, Jennifer 1969-, and Tim Gale. Ecotourism and Environmental Sustainability: Principles and Practice. Farnham, England ; Burlington, VT: Ashgate, 2009.

Cita MLA

Hill, Jennifer 1969-, and Tim Gale. Ecotourism and Environmental Sustainability: Principles and Practice. Farnham, England ; Burlington, VT: Ashgate, 2009.