Shipka, Thomas A.
McGraw-Hill, 1996
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Wachyu Hadisaputra, JM Seno Adjie, Dwiana Octiviyanti, Achmad Kemal Harzif, editors
Bina Pustaka Sarwono Prawirohardjo, 2015
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Tannenbaum, Donald G.
Wadsworth/Thomson learning, 2004
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THe Free Press, 1961
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Corbett, Sister Thomas Albert
University of America Press, 1950
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