ZETHAMAL, V. A. (2011). SERVICE MARKETING (5TH.). TMH.
Chicago-čujuhus (17. p.)ZETHAMAL, VALARIE A. SERVICE MARKETING. 5TH. DELHI: TMH, 2011.
MLA-čujuhus (9. p.)ZETHAMAL, VALARIE A. SERVICE MARKETING. 5TH. TMH, 2011.
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