Gaya APA

DeVrye, C. (1994). Good servise is good business 7 strategi sederhana menuju sukses (good service is good business 7 simple strategies for success) . Jakarta: PT Gramedia Pustaka Utama.

Gaya MLA

DeVrye, Catherine. "Good servise is good business 7 strategi sederhana menuju sukses (good service is good business 7 simple strategies for success)". Jakarta: PT Gramedia Pustaka Utama, 1994. BUKU.