Gaya APA

Setyarini, S., Sulistyo, U. (2007). Successfull english for business (I -). Yogyakarta: Andi Offset.

Gaya MLA

Setyarini, Susana., Sulistyo, Ule. "Successfull english for business". I - Yogyakarta: Andi Offset, 2007. Text.