Gaya APA

Sharpe, P, J. (2013). TOEFL iBT : Internet Based Test (Ed. 14 Cet, 3). United States America: Barrons.

Gaya MLA

Sharpe, Pamela, J.. "TOEFL iBT : Internet Based Test". Ed. 14 Cet, 3 United States America: Barrons, 2013. Text.