Hill, R. C., & Negrey, C. Deindustrialisation and racial minorities in the Great Lakes region, USA: Richard Child Hill. Cynthia Negrey. Ethnic Minorities and industrial change in Europe and North America.(1992).
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hill, Richard Child, و Cynthia Negrey. "Deindustrialisation and Racial Minorities in the Great Lakes Region, USA: Richard Child Hill. Cynthia Negrey." Ethnic Minorities and Industrial Change in Europe and North America.(1992) .
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hill, Richard Child, و Cynthia Negrey. "Deindustrialisation and Racial Minorities in the Great Lakes Region, USA: Richard Child Hill. Cynthia Negrey." Ethnic Minorities and Industrial Change in Europe and North America.(1992), .
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