Gaya APA

Sarwono, J., Purwanto, Y. (2013). English for Academi Purposes : A Successful Way to Learn Scientific English (ed 1). Yogyakarta: Andi.

Gaya MLA

Sarwono, Jonathan., Purwanto, Yudhy. "English for Academi Purposes : A Successful Way to Learn Scientific English". ed 1 Yogyakarta: Andi, 2013. Text.