GUPTA P K. (2002). SERVICES MARKETING. EVEREST PUBLICATIONS.
Chicagoスタイル(17版)引用形式GUPTA P K. SERVICES MARKETING. PUNE: EVEREST PUBLICATIONS, 2002.
MLA(9版)引用形式GUPTA P K. SERVICES MARKETING. EVEREST PUBLICATIONS, 2002.
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APA(7版)引用形式