Gaya APA

Riyanto, S. (2007). TOEFL (Test Of English As A Foreign Language) :the 1st student's choice toefl . Gorontalo: Lanskap Zaman,dan Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. "TOEFL (Test Of English As A Foreign Language) :the 1st student's choice toefl". Gorontalo: Lanskap Zaman,dan Pustaka Pelajar, 2007. Text.