Sullivan, J. (1998). Service that sells: The Art of profitable hospitality. Denver: Pencom.
Chicago Stili AlıntıSullivan, Jim. Service That Sells: The Art of Profitable Hospitality. Denver: Pencom, 1998.
MLA AlıntıSullivan, Jim. Service That Sells: The Art of Profitable Hospitality. Denver: Pencom, 1998.
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