APA引文

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

Chicago Style (17th ed.) Citation

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

MLA引文

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

警告：這些引文格式不一定是100％准確.