Cita APA (7a ed.)

Walker, R., & Harding, K. (2009). Tourism: 3. Oxford University Press.

Cita Chicago Style (17a ed.)

Walker, Robin, y Keith Harding. Tourism: 3. Oxford: Oxford University Press, 2009.

Cita MLA (9a ed.)

Walker, Robin, y Keith Harding. Tourism: 3. Oxford University Press, 2009.