Davis, J. M. (1967). Modern industry and the African: An enquiry into the effect of the copper mines of Central Africa upon native society and the work of the Christian missions (Second edition.). Frank cass.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Davis, J. Merle. Modern Industry and the African: An Enquiry into the Effect of the Copper Mines of Central Africa upon Native Society and the Work of the Christian Missions. Second edition. London: Frank cass, 1967.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Davis, J. Merle. Modern Industry and the African: An Enquiry into the Effect of the Copper Mines of Central Africa upon Native Society and the Work of the Christian Missions. Second edition. Frank cass, 1967.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.