Gaya APA
Devrye, C.
(1977).
Good Service Is Good Business: 7 Strategi Sederhana Menuju Sukses
.
Jakarta:
Gramedia.
Gaya MLA
Devrye, Catherine.
"Good Service Is Good Business: 7 Strategi Sederhana Menuju Sukses".
Jakarta:
Gramedia,
1977.
Text.