Walker, J. R. (2002). Instructor's manual sntroquction to hospitality (Thir edition.). New Jersey: Pentice Hall.
Chicago Stili AlıntıWalker, John R. Instructor's Manual Sntroquction to Hospitality. Thir edition. New Jersey: Pentice Hall, 2002.
MLA AlıntıWalker, John R. Instructor's Manual Sntroquction to Hospitality. Thir edition. New Jersey: Pentice Hall, 2002.
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