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Service management : mewujudkan layanan prima. (). Yogyakarta: Andi.

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Service management : mewujudkan layanan prima. . Yogyakarta: Andi, . Text.

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Service management : mewujudkan layanan prima. . Yogyakarta: Andi, . Text.

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Service management : mewujudkan layanan prima. Yogyakarta: Andi, . Print.