Gaya APA
DeVrye, C. (1997).
Good Service is good business : 7 Strategi sederhana menuju sukses (Cet. 1).
Jakarta:
PT Gramedia Pustaka Utama.
Gaya MLA
DeVrye, Catherine.
"Good Service is good business : 7 Strategi sederhana menuju sukses".
Cet. 1
Jakarta:
PT Gramedia Pustaka Utama,
1997.
Text.