Lua APA (7ú heag.)
Douglass, F., & Ruffin, G. L. (2001). The life and times of Frederick Douglass. Digital Scanning.
Lua i Stíl Chicago (17ú heag.)
Douglass, Frederick, agus George L. Ruffin. The Life and Times of Frederick Douglass. Scituate, Mass.: Digital Scanning, 2001.
Lua MLA (9ú heag.)
Douglass, Frederick, agus George L. Ruffin. The Life and Times of Frederick Douglass. Digital Scanning, 2001.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.