Gaya APA

Riyanto, S. (2008). TOEFL Test Strategy For Structure And Written Expression (Cet. 2). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. "TOEFL Test Strategy For Structure And Written Expression". Cet. 2 Yogyakarta: Pustaka Pelajar, 2008. Text.