Gaya APA

Riyanto, B, S. (2015). Toefl (Test Of English As A Foreign Language) (Cet. 6. --). Yogyakarta: Pustaka Pelajar.

Gaya MLA

Riyanto, By, Slamet. "Toefl (Test Of English As A Foreign Language)". Cet. 6. -- Yogyakarta: Pustaka Pelajar, 2015. Text.