Παραπομπή APA

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

Παραπομπή Chicago Style

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

Παραπομπή MLA

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