Não informado. Public Health Service Publications. U.S. Department of Health Education and Welfare.
Čikaški stil citiranja (17. izdanje)Não informado. Public Health Service Publications. Washington: U.S. Department of Health Education and Welfare.
MLA način citiranja (8. izdanje)Não informado. Public Health Service Publications. U.S. Department of Health Education and Welfare.
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