Gaya APA

RIYANTO, S. (2008). A Quick and Effective Strategy To Understand Structure & Written Expression For Toefl Test . Yogyakarta: Pustaka Pelajar.

Gaya MLA

RIYANTO, Slamet. "A Quick and Effective Strategy To Understand Structure & Written Expression For Toefl Test". Yogyakarta: Pustaka Pelajar, 2008. Text.