MILL, R. C. (1990). Tourism The International Business Robert Christie Mill. Prentice-Hall.
Cita Chicago Style (17a ed.)MILL, Robert Christie. Tourism The International Business Robert Christie Mill. Prentice-Hall, 1990.
Cita MLA (8a ed.)MILL, Robert Christie. Tourism The International Business Robert Christie Mill. Prentice-Hall, 1990.
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