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Lua i Stíl Chicago (17ú heag.)TJIPTONO, Fandy. Service Management Mewujudkan Layanan Prima Edisi 2. Andi Offset, 2012.
Lua MLA (8ú heag.)TJIPTONO, Fandy. Service Management Mewujudkan Layanan Prima Edisi 2. Andi Offset, 2012.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.