Cita APA (7th ed.)

Edgell, D. L., Allen, M. D., & Smith, G. (2008). Tourism Policy and Planning: Yesterday, Today and Tomorrow. Butterworth-Heinemann.

Cita Chicago (17th ed.)

Edgell, David L., Maria DelMastro Allen, i Ginger Smith. Tourism Policy and Planning: Yesterday, Today and Tomorrow. Oxford: Butterworth-Heinemann, 2008.

Cita MLA (9th ed.)

Edgell, David L., et al. Tourism Policy and Planning: Yesterday, Today and Tomorrow. Butterworth-Heinemann, 2008.