Gaya APA
Sharpe, P, J.
(2007).
Pass key to the TOEFL iBT
(
6th.ed.)
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Jakarta:
Penerbit Binarupa Aksara.
Gaya MLA
Sharpe, Pamela, J..
"Pass key to the TOEFL iBT".
6th.ed.
Jakarta:
Penerbit Binarupa Aksara,
2007.
Teks.