Walker, John R. Tourism : concepts and practices / John R. Walker and Josielyn T. Walker. -- New Jersey: Pearson Education, Inc.. 2011. xxxviii, 537 p.: col. ill.; 26 cm. Includes index. ISBN: 9780138142452 Subjects--Topical Terms: Tourism.Dewey Class. No.: Res 910.68 W151 2011