Cita APA (7a ed.)
Douglass, F., & Ruffin, G. L. (2001). The life and times of Frederick Douglass. Digital Scanning.
Cita Chicago Style (17a ed.)
Douglass, Frederick, y George L. Ruffin. The Life and Times of Frederick Douglass. Scituate, Mass.: Digital Scanning, 2001.
Cita MLA (9a ed.)
Douglass, Frederick, y George L. Ruffin. The Life and Times of Frederick Douglass. Digital Scanning, 2001.
Precaución: Estas citas no son 100% exactas.