Gaya APA
Easy english : effective english learning for students. (2011).
Jakarta:
Pustaka Mina.
Gaya Chicago
Easy english : effective english learning for students.
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Jakarta:
Pustaka Mina,
2011.
Text.
Gaya MLA
Easy english : effective english learning for students.
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Jakarta:
Pustaka Mina,
2011.
Text.
Gaya Turabian
Easy english : effective english learning for students.
Jakarta:
Pustaka Mina,
2011.
Print.