Peni R. Pramono, & Oktaviani HS. (2005). 30 menit essay writing, writing is easy. Yogyakarta: Andi offset.
シカゴスタイル引用形Peni R. Pramono, and Oktaviani HS. 30 Menit Essay Writing, Writing Is Easy. Yogyakarta: Andi offset, 2005.
MLA引用形式Peni R. Pramono, and Oktaviani HS. 30 Menit Essay Writing, Writing Is Easy. Yogyakarta: Andi offset, 2005.
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