Gaya APA
Sharpe, P, J. (2008).
BARRON'S PRACTICE EXERCISES FOR THE TOEFL students' #1 choice (Ed. 6).
Tangerang:
Binarupa Aksara.
Gaya MLA
Sharpe, Pamela, J..
"BARRON'S PRACTICE EXERCISES FOR THE TOEFL students' #1 choice".
Ed. 6
Tangerang:
Binarupa Aksara,
2008.
Book.