Lundberg, D. E. (1990). The tourist business (6th ed.). Van Nostrand Reinhold.
Cita Chicago Style (17a ed.)Lundberg, Donald E. The Tourist Business. 6th ed. New York: Van Nostrand Reinhold, 1990.
Cita MLA (8a ed.)Lundberg, Donald E. The Tourist Business. 6th ed. Van Nostrand Reinhold, 1990.
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