S., P., J. et al.(2013).Kunci sukses TOEFL iBT: test of English as a foreign language internet-based test (dilengkapi CD) .Tangerang Selatan:Paperplus Publisher.
Gaya MLA
S., Pamela, J.. et al."Kunci sukses TOEFL iBT: test of English as a foreign language internet-based test (dilengkapi CD)".Tangerang Selatan:Paperplus Publisher,2013.Textbook.