Não informado. (2004). Human Ecology. New York State College of Human Ecology.
Lua i Stíl Chicago (17ú heag.)Não informado. Human Ecology. Ithaca, NY: New York State College of Human Ecology, 2004.
Lua MLA (8ú heag.)Não informado. Human Ecology. New York State College of Human Ecology, 2004.
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