MILL, R. C. (1990). Tourism The International Business Robert Christie Mill. Prentice-Hall.
Čikaški stil citiranja (17. izdanje)MILL, Robert Christie. Tourism The International Business Robert Christie Mill. Prentice-Hall, 1990.
MLA način citiranja (8. izdanje)MILL, Robert Christie. Tourism The International Business Robert Christie Mill. Prentice-Hall, 1990.
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