Citace podle APA (7th ed.)
Griffler, K. P. (2010). Front line of freedom: African Americans and the forging of the Underground Railroad in the Ohio Valley (Paperback edition.). The University Press of Kentucky.
Citace podle Chicago (17th ed.)
Griffler, Keith P. Front Line of Freedom: African Americans and the Forging of the Underground Railroad in the Ohio Valley. Paperback edition. Lexington, Kentucky: The University Press of Kentucky, 2010.
Citace podle MLA (9th ed.)
Griffler, Keith P. Front Line of Freedom: African Americans and the Forging of the Underground Railroad in the Ohio Valley. Paperback edition. The University Press of Kentucky, 2010.
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