Burkart, A. J., & Medlik, S. (1989). Tourism: Past, present and future (2nd ed.). Oxford: Heinemann Professional Publishing.
Παραπομπή Chicago StyleBurkart, A. J., and S. Medlik. Tourism: Past, Present and Future. 2nd ed. Oxford: Heinemann Professional Publishing, 1989.
Παραπομπή MLABurkart, A. J., and S. Medlik. Tourism: Past, Present and Future. 2nd ed. Oxford: Heinemann Professional Publishing, 1989.
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