Gelb, I. J. (1976). Quantitative Evaluation of Slavery and Serfdom.
Chicago Style (17th ed.) CitationGelb, I. J. Quantitative Evaluation of Slavery and Serfdom. 1976.
MLA (8th ed.) CitationGelb, I. J. Quantitative Evaluation of Slavery and Serfdom. 1976.
Warning: These citations may not always be 100% accurate.