APA (7th ed.) Zitazioa
Westheimer, R. K. (2003). Musically speaking: A life through song. University of Pennsylvania Press.
Chicago Style (17th ed.) Zitazioa
Westheimer, Ruth K. Musically Speaking: A Life Through Song. Philadelphia: University of Pennsylvania Press, 2003.
MLA (9th ed.) Zitazioa
Westheimer, Ruth K. Musically Speaking: A Life Through Song. University of Pennsylvania Press, 2003.
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