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Gaya APA

Purba, A. (2008). Esai Sastra Indonesia: Teori & Penulisan . Yogyakarta: Yogyakarta: Graha Ilmu.

Gaya MLA

Purba, Antilan. "Esai Sastra Indonesia: Teori & Penulisan". Yogyakarta: Yogyakarta: Graha Ilmu, 2008. Text.