Hendricks, G., & Carlson, J. (1982). The cetered athlete. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Hendricks, Gay, agus Jon Carlson. The Cetered Athlete. Prentice-Hall, 1982.
Lua MLA (8ú heag.)Hendricks, Gay, agus Jon Carlson. The Cetered Athlete. Prentice-Hall, 1982.
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