9 1 50 Winer, George Benedict Primary Author mixed material London Warren F. Draper 1881 A Self-study reference and Practice book for elementary students of English With Answers Murphy, Raymond Primary Author mixed material 0521357713 Cambridge Cambridge University Press 1990 Walker, Michael Primary Author Mellgren, Lars Primary Author mixed material 0201044307 California Addison- Wesley Publishing company 1975 Penguasaan Tata Bahasa Inggris Djauhari, Imam D. Primary Author mixed material Surabaya INDAH Surabaya 1996 English Grammar (Sistem Cepat Tepat) Hartanto, John Surjadi. Editor Tirta, Johan Editor Soesiadhy TJ. Editor mixed material Jakarta Penerbit Indah 1980 For First Year English Departement University Students Dwijatmoko, B.B Primary Author mixed material Yogyakarta Kanisius 1990 Azar, Betty Schrampfer Primary Author mixed material 0139436146 New Jersey Prentice Hall Regents 1989 Rosenthal, Franz Primary Author mixed material Wiesbaden Otto Harrassowitz 1963 Kautzsch, E Editor mixed material 0198154062 New York Oxford At The Clarendon Press 1976