Dyfyniad APA

Kolchin, P. (1987). Unfree labor: American slavery and Russian serfdom. Belknap Press of Harvard University Press.

Dyfyniad Arddull Chicago

Kolchin, Peter. Unfree Labor: American Slavery and Russian Serfdom. Cambridge, MA: Belknap Press of Harvard University Press, 1987.

Dyfyniad MLA

Kolchin, Peter. Unfree Labor: American Slavery and Russian Serfdom. Belknap Press of Harvard University Press, 1987.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.