Gaya APA

Cholil, M., Sunarno, A. (2014). Complain Topedia The Art of Complaint Handling . Yogyakarta: CV Andi Offset.

Gaya MLA

Cholil, Mohammad., Sunarno, Adi. "Complain Topedia The Art of Complaint Handling". Yogyakarta: CV Andi Offset, 2014. Textbook.