Armstrong, L. E. (2000). Performance in extreme environments. Human Kinetics.
Lua i Stíl Chicago (17ú heag.)Armstrong, Lawrence E. Performance in Extreme Environments. Champaign, Ill: Human Kinetics, 2000.
Lua MLA (9ú heag.)Armstrong, Lawrence E. Performance in Extreme Environments. Human Kinetics, 2000.
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