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Safitri Mahargiani, Indah and , Prof. Dr. Endang Fauziati, M. Hum and , Muamaroh, Ph.D (2015) The Developmental Sequences of English Negation of Secondary School Students at SMK Putra Bangsa Salatiga and MTs AL Uswah Bergas Semarang Regency. Thesis thesis, Universitas Muhammadiyah Surakarta.