Gaya APA
Cholil, M., Soenarno, A. (2014).
Complain Topedia The Art of Complaint Handling (1).
Yogyakarta:
Penerbit ANDI.
Gaya MLA
Cholil, Mohammad., Soenarno, Adi.
"Complain Topedia The Art of Complaint Handling".
1
Yogyakarta:
Penerbit ANDI,
2014.
Texts.