Gaya APA

Sarwono, J., Purwanto, Y. (2013). English for academic purposes : a successful way to learn scientific English, reading, writing, vocabulary . Yogyakarta: Andi Offset.

Gaya MLA

Sarwono, Jonathan., Purwanto, Yudhy. "English for academic purposes : a successful way to learn scientific English, reading, writing, vocabulary". Yogyakarta: Andi Offset, 2013. Text.