Cita APA (7th ed.)

Dowling, R. K., & Newsome, D. (2006). Geotourism. Elsevier Butterworth-Heinemann.

Cita Chicago (17th ed.)

Dowling, Ross K., i David Newsome. Geotourism. Oxford: Elsevier Butterworth-Heinemann, 2006.

Cita MLA (9th ed.)

Dowling, Ross K., i David Newsome. Geotourism. Elsevier Butterworth-Heinemann, 2006.