HILL, L. (1962). English sounds and spellings. O.U.P..
Chicago Style (17th ed.) ZitazioaHILL, L.A. English Sounds and Spellings. London: O.U.P., 1962.
MLA (9th ed.) ZitazioaHILL, L.A. English Sounds and Spellings. O.U.P., 1962.
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