O'CONNOR, F. (1967). Better english pronunciation. C.U.O..
Tohutoru Kātū Chicago (17th ed.)O'CONNOR, F.D. Better English Pronunciation. London: C.U.O., 1967.
Tohutoro MLA (9th ed.)O'CONNOR, F.D. Better English Pronunciation. C.U.O., 1967.
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