Cita APA

Holden, A. 1., & Holden, A. 1. (2008). Environment and tourism (2. edition.). London: Routledge.

Citación estilo Chicago

Holden, Andrew 1960-, y Andrew 1960- Holden. Environment and Tourism. 2. edition. London: Routledge, 2008.

Cita MLA

Holden, Andrew 1960-, y Andrew 1960- Holden. Environment and Tourism. 2. edition. London: Routledge, 2008.