APA-referens (7:e uppl.)
Whitman, T. S. (1997). The price of freedom: Slavery and manumission in Baltimore and early national Maryland. The University Press of Kentucky.
Chicago-referens (17:e uppl.)
Whitman, T. Stephen. The Price of Freedom: Slavery and Manumission in Baltimore and Early National Maryland. Lexington, Kentucky: The University Press of Kentucky, 1997.
MLA-referens (9:e uppl.)
Whitman, T. Stephen. The Price of Freedom: Slavery and Manumission in Baltimore and Early National Maryland. The University Press of Kentucky, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.