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Gaya APA

R.Pramono, P. (2005). 30 Menit Essay Writing,Writing is Easy . Yogyakarta: Yogyakarta:Andi.

Gaya MLA

R.Pramono, Peni. "30 Menit Essay Writing,Writing is Easy". Yogyakarta: Yogyakarta:Andi, 2005. Text.