Cita APA

Litwack, L. F. (1961). North of slavery. The negro in the free stetes, 1790-1860. Chicago US: The University of Chicago Press.

Citación estilo Chicago

Litwack, León F. North of Slavery. The Negro in the Free Stetes, 1790-1860. Chicago US: The University of Chicago Press, 1961.

Cita MLA

Litwack, León F. North of Slavery. The Negro in the Free Stetes, 1790-1860. Chicago US: The University of Chicago Press, 1961.