The American heritage: dictionary of the English language
editor, William Morris
Houghton Miffiln, 1976
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Webster's new world dictionary of American English
Victoria Neufeldt, David B. Guralnik, editor
Webster's New World, 1988
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Diamond english-english Hindi dictionary
Diamond, 2001
 Buku Referensi
Eckersley, C. E. (Charles Ewart), 1892-1967
The essential English dictionary English-Spanish Spanish-English
Longmans, Green and Co., 1953
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Morris, Edward E.
A Dictionary of Australia English
Sydney University Press, 1972
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