Ward, W. [. o. c. (2017). Singers' throat troubles: Their cause and cure. Norderstedt.
Chicago Style (17. basım) AtıfWard, Whitfield. [from old catalog]. Singers' Throat Troubles: Their Cause and Cure. Hansebooks GmbH: Norderstedt, 2017.
MLA (9th ed.) AtıfWard, Whitfield. [from old catalog]. Singers' Throat Troubles: Their Cause and Cure. Norderstedt, 2017.
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