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Peruanti, Dessy and , Dr. Phil Dewi Candraningrum, S.Pd., M.Ed. and , Siti Fatimah, S.Pd., M.Hum. (2013) Greg’s Environment Factors To Be A Favorite Student In Thor Freudenthal’s Diary Of A Wimpy Kid Movie (2010): A Behaviorist Approach. Skripsi thesis, Universitas Muhammadiyah Surakarta.