Hellmann, E., & Abrahams, L. (1949). Handbook on race relations in South Africa: Ed. by Ellen Hellmann. Ass. by Leah Abrahams. Publ. for the South African Institute of Race Relations. Oxford Univ. Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Hellmann, Ellen, و Leah Abrahams. Handbook on Race Relations in South Africa: Ed. by Ellen Hellmann. Ass. by Leah Abrahams. Publ. for the South African Institute of Race Relations. Cape Town [u.a.]: Oxford Univ. Press, 1949.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Hellmann, Ellen, و Leah Abrahams. Handbook on Race Relations in South Africa: Ed. by Ellen Hellmann. Ass. by Leah Abrahams. Publ. for the South African Institute of Race Relations. Oxford Univ. Press, 1949.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.