S. Husin Ali
Oxford University Press, 1975
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Firth, Raymond
Routledge & Kegan Paul, 1971
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edited by Hendry W. Ehrmann
Vakils, Fiffer and Simons, 1963
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Oxford University Press, 1983
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Pudentia Maria Purenti Sri Suniarti Karnadi
Faculty of Humanities University of Indonesia, 2010
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