Gaya APA
Devrye, C. (2003).
Good service is good business: 7 strategi sederhana menuju sukses .
JAKARTA:
Gramedia Pustaka Utama.
Gaya MLA
Devrye, Catherine.
"Good service is good business: 7 strategi sederhana menuju sukses".
JAKARTA:
Gramedia Pustaka Utama,
2003.
Text.