Chabut, L. (2005). Exercise balls for dummies. Wiley.
Lua i Stíl Chicago (17ú heag.)Chabut, LaReine. Exercise Balls for Dummies. Hoboken, N.J: Wiley, 2005.
Lua MLA (9ú heag.)Chabut, LaReine. Exercise Balls for Dummies. Wiley, 2005.
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