Gaya APA

DKK, S. (2007). SUCCESFUL ENGLISH FOR BUSINESS (ED.1). YOGYAKARTA: CV. ANDI OFFSET.

Gaya MLA

DKK, SETYRINI,SUASANA. "SUCCESFUL ENGLISH FOR BUSINESS". ED.1 YOGYAKARTA: CV. ANDI OFFSET, 2007. Text.