Perpustakaan UGM, i. (1999). Relationship Marketing: The lesson That today's Marketer Ought to Learn (a Marketer'. [Yogyakarta] : Universitas Gadjah Mada.
استشهاد بنمط شيكاغوPerpustakaan UGM, i-lib. Relationship Marketing: The Lesson That Today's Marketer Ought to Learn (a Marketer'. [Yogyakarta] : Universitas Gadjah Mada, 1999.
MLA استشهادPerpustakaan UGM, i-lib. Relationship Marketing: The Lesson That Today's Marketer Ought to Learn (a Marketer'. [Yogyakarta] : Universitas Gadjah Mada, 1999.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.