APA Style

Pramono, Peni R.. (2006). 30 Menit Essay Writing, Writing is Easy (1). Yogyakarta: Andi.

Chicago Style

Pramono, Peni R.. 30 Menit Essay Writing, Writing is Easy. 1 Yogyakarta: Andi, 2006. Text.

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Pramono, Peni R.. 30 Menit Essay Writing, Writing is Easy. 1 Yogyakarta: Andi, 2006. Text.

Turabian Style

Pramono, Peni R.. 30 Menit Essay Writing, Writing is Easy. 1 Yogyakarta: Andi, 2006. Print.