Cita APA (7a ed.)

Medlik, S. (1999). Understanding tourism. Butterworth-Heinemann.

Cita Chicago Style (17a ed.)

Medlik, S. Understanding Tourism. Oxford [etc.]: Butterworth-Heinemann, 1999.

Cita MLA (9a ed.)

Medlik, S. Understanding Tourism. Butterworth-Heinemann, 1999.