Citazione APA

Drescher, S., & Engerman, S. L. (1998). Historical guide to World Slavery. Oxford University.

Stile di citazione Chicago

Drescher, Seymour, e Slanley L. Engerman. Historical Guide to World Slavery. New York: Oxford University, 1998.

Citazione MLA

Drescher, Seymour, e Slanley L. Engerman. Historical Guide to World Slavery. Oxford University, 1998.