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Gaya APA
Martinus, S.(2010).Cara Mudah Menguasai Bahasa Inggris .Yogyakarta:Yogyakarta:Kawah Media.
Gaya MLA
Martinus, Surawan."Cara Mudah Menguasai Bahasa Inggris".Yogyakarta:Yogyakarta:Kawah Media,2010.Text.