Gaya APA
Betsis, A., Mamas, L.
(2013).
SUCCEED IN THE TOEFL IBT TEST
.
Jakarta:
PT. Penerbit Erlangga.
Gaya MLA
Betsis, Andrew., Mamas, Lawrence.
"SUCCEED IN THE TOEFL IBT TEST".
Jakarta:
PT. Penerbit Erlangga,
2013.
Text.