Gaya APA
Sharpe, P, J.
(2007).
TOEFL iBT : Internet-Based Test, 12th Edition
(
12)
.
:
HarperCollins.
Gaya MLA
Sharpe, Pamela, J..
"TOEFL iBT : Internet-Based Test, 12th Edition".
12
:
HarperCollins,
2007.
Academic.