Cita APA

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

Citación estilo Chicago

Litwack, Leon F. North of Slavery: The Negro in the Free States, 1790-1860. [Chicago]: University of Chicago Press, 1961.

Cita MLA

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

Warning: These citations may not always be 100% accurate.