Gaya APA

Widayati, H, R, I, D, J. (2015). The New Toeic Official Test Preparation Guide : Bilingual Edition . Jakarta: PT Internationa Test Center.

Gaya MLA

Widayati, Hafilia, R., Ismanto, Dan, Juli. "The New Toeic Official Test Preparation Guide : Bilingual Edition". Jakarta: PT Internationa Test Center, 2015. Text.