Não informado. (2000). Bulletin. Human Factors and Ergonomics Society.
Lua i Stíl Chicago (17ú heag.)Não informado. Bulletin. Santa Monica, Calif: Human Factors and Ergonomics Society, 2000.
Lua MLA (8ú heag.)Não informado. Bulletin. Human Factors and Ergonomics Society, 2000.
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