Παραπομπή APA

Cook,Roy.A. (2011). Tourism/3e: The business of travel (3 rd ed.). Pearson education.

Παραπομπή Chicago Style

Cook,Roy.A. Tourism/3e: The Business of Travel. 3 rd ed. Noida: Pearson education, 2011.

Παραπομπή MLA

Cook,Roy.A. Tourism/3e: The Business of Travel. 3 rd ed. Pearson education, 2011.