Gaya APA
DeVrye, C. (1997).
Good Service is Good Business: 7 Strategi Sederhana Menuju Sukses .
Jakarta:
PT Gramedia pustaka utama.
Gaya MLA
DeVrye, Catherine.
"Good Service is Good Business: 7 Strategi Sederhana Menuju Sukses".
Jakarta:
PT Gramedia pustaka utama,
1997.
Text.