Elliott, M. (2011). Singing in style: A guide to vocal performance practices. University of Illinois Pr.
Chicago-viite (17. p.)Elliott, Martha. Singing in Style: A Guide to Vocal Performance Practices. Urbana: University of Illinois Pr, 2011.
MLA-viite (9. p.)Elliott, Martha. Singing in Style: A Guide to Vocal Performance Practices. University of Illinois Pr, 2011.
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