Friedlander, C. (2018). Complete vocal fitness: A singer's guide to physical training, anatomy, and biomechanics. Rowman & Littlefield.
Lua i Stíl Chicago (17ú heag.)Friedlander, Claudia. Complete Vocal Fitness: A Singer's Guide to Physical Training, Anatomy, and Biomechanics. Lanham, Maryland: Rowman & Littlefield, 2018.
Lua MLA (9ú heag.)Friedlander, Claudia. Complete Vocal Fitness: A Singer's Guide to Physical Training, Anatomy, and Biomechanics. Rowman & Littlefield, 2018.
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