Roeldner, Charles R. Tourism : Principles, Practices, Philosophies / Charles R. Goeldner - 12th Edition - America : Wiley, 2012 - 494 p. ; 28 cm. ISBN: 9781118071779 Subjects--Topical Terms: Tourism Subjects--Index Terms: Du lịch Dịch vụ Dewey Class. No.: 338.4791 / ROE