Gaya APA
DeVrye, C. (2001).
Good Service Is Good Business. 7 Strategi Sederhana Menuju Sukses (I).
Jakarta:
Gramedia Pustaka Utama.
Gaya MLA
DeVrye, Catherine.
"Good Service Is Good Business. 7 Strategi Sederhana Menuju Sukses".
I
Jakarta:
Gramedia Pustaka Utama,
2001.
Text.