Ragan, K. (2020). A systematic approach to voice: The art of studio application. Plural Publishing, Inc..
Chicago-viite (17. p.)Ragan, Kari. A Systematic Approach to Voice: The Art of Studio Application. San Diego, CA: Plural Publishing, Inc., 2020.
MLA-viite (9. p.)Ragan, Kari. A Systematic Approach to Voice: The Art of Studio Application. Plural Publishing, Inc., 2020.
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