Gaya APA

Pawitrasari, R, S, W, R, V. (2009). English for economics and business (book b : speaking, listening, and vocabulary) . : Mitra Wacana Media.

Gaya MLA

Pawitrasari, Rica, S., Wuryaningrum,, R.A., Vitria. "English for economics and business (book b : speaking, listening, and vocabulary)". : Mitra Wacana Media, 2009. Text.