Whitman, T. S. (1997). The price of freedom: Slavery and manumission in Baltimore and early national Maryland. University Press of Kentucky.
芝加哥风格引文Whitman, T. Stephen. The Price of Freedom: Slavery and Manumission in Baltimore and Early National Maryland. Lexington, Ky.: University Press of Kentucky, 1997.
MLA引文Whitman, T. Stephen. The Price of Freedom: Slavery and Manumission in Baltimore and Early National Maryland. University Press of Kentucky, 1997.
警告：这些引文格式不一定是100％准确.