Gaya APA

Riyanto, S. (2015). The 1st Student's Choice Toefl Preparation : (Test of English as a Foreign Language) (Cet. 4). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. "The 1st Student's Choice Toefl Preparation : (Test of English as a Foreign Language)". Cet. 4 Yogyakarta: Pustaka Pelajar, 2015. Monograf.