Gaya APA
Betsis, Andrew, Mamas, Lawrence. (2011).
Succeed in IELTS .
Jakarta:
Penerbit Erlangga.
Gaya Chicago
Betsis, Andrew, Mamas, Lawrence.
Succeed in IELTS.
Jakarta:
Penerbit Erlangga,
2011.
Text.
Gaya MLA
Betsis, Andrew, Mamas, Lawrence.
Succeed in IELTS.
Jakarta:
Penerbit Erlangga,
2011.
Text.
Gaya Turabian
Betsis, Andrew, Mamas, Lawrence.
Succeed in IELTS.
Jakarta:
Penerbit Erlangga,
2011.
Print.