Gaya APA

Riyanto, S. et al (2008). A quick and effective strategu to understand structure & written expression toefl test : kupas tuntas strategi cepat & efektif memahami soal srructure & written expression (Cet. 1). Gorontalo: Pustaka Pelajar.

Gaya MLA

Riyanto, Slamet. et al. "A quick and effective strategu to understand structure & written expression toefl test : kupas tuntas strategi cepat & efektif memahami soal srructure & written expression". Cet. 1 Gorontalo: Pustaka Pelajar, 2008. Text.