Katz, W. L. (1967). Eyewitness: The Negro in American history. Pitnam.
Lua i Stíl Chicago (17ú heag.)Katz, William Loren. Eyewitness: The Negro in American History. New York: Pitnam, 1967.
Lua MLA (9ú heag.)Katz, William Loren. Eyewitness: The Negro in American History. Pitnam, 1967.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.