ebrary, Inc. (1998). Protecting youth at work: Health, safety, and development of working children and adolescents in the United States. National Academy Press.
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Chicago-čujuhus (17. p.)
ebrary, Inc. Protecting Youth at Work: Health, Safety, and Development of Working Children and Adolescents in the United States. Washington, D.C.: National Academy Press, 1998.
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MLA-čujuhus (9. p.)
ebrary, Inc. Protecting Youth at Work: Health, Safety, and Development of Working Children and Adolescents in the United States. National Academy Press, 1998.
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