Gaya APA

Riyanto, S. (2008). Developing Grammar Skills For The TOEIC Test (ed. 1). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. "Developing Grammar Skills For The TOEIC Test". ed. 1 Yogyakarta: Pustaka Pelajar, 2008. Text.