Gaya APA
Haryono, P, B.
(2016).
How To Win Customer Through Customer Service With Heart
.
Yogyakarta:
Andi Offset.
Gaya MLA
Haryono, PM., Budi.
"How To Win Customer Through Customer Service With Heart".
Yogyakarta:
Andi Offset,
2016.
Buku.