Gaya APA

Mamas, A, B, A, L. (2016). SUCCEED IN THE TOEFL iBT TEST Self-practice, Authentic test format, Practical usage . Jakarta: Erlangga.

Gaya MLA

Mamas, Andrew, Betsis, And, Lawrence. "SUCCEED IN THE TOEFL iBT TEST Self-practice, Authentic test format, Practical usage". Jakarta: Erlangga, 2016. Text.