Allsen, P. E. (1989). Fitness for life: An individualized approach (4th ed.). W.C. Brown.
Lua i Stíl Chicago (17ú heag.)Allsen, Philip E. Fitness for Life: An Individualized Approach. 4th ed. Dubuque, Iowa: W.C. Brown, 1989.
Lua MLA (9ú heag.)Allsen, Philip E. Fitness for Life: An Individualized Approach. 4th ed. W.C. Brown, 1989.
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