Gaya APA
Ph.D., P, J.
(2007).
Barronn's How To Prepare For The TOEFL iBT ed.12
(
12th)
.
Jakarta:
.
Gaya MLA
Ph.D., Pamela, J.Sharpe,.
"Barronn's How To Prepare For The TOEFL iBT ed.12".
12th
Jakarta:
,
2007.
Buku Teks.