Astuti, E. M. (2011). ENGLISH ZONE for Senior High School Students Year X. Erlangga.
Chicagoスタイル(17版)引用形式Astuti, Eka Mulya. ENGLISH ZONE for Senior High School Students Year X. Erlangga, 2011.
MLA(8版)引用形式Astuti, Eka Mulya. ENGLISH ZONE for Senior High School Students Year X. Erlangga, 2011.
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