Lackie, J.M.
Elseiver Academic Press, 2007
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Merriam-Webster, 1998
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Ellis Cashmore with Michael Banton, James Jennings, Barry Troyna, Pierre L. Van Den Bergdhe
Routledge, 1996
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Peter Salim, author
Modern English Press, 1991
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Delair Publishing Company, 1981
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