Lua APA (7ú heag.)
ebrary, Inc, & Walker, J. E. K. (1999). Encyclopedia of African American business history. Greenwood Press.
Lua i Stíl Chicago (17ú heag.)
ebrary, Inc, agus Juliet E. K. Walker. Encyclopedia of African American Business History. Westport, Conn.: Greenwood Press, 1999.
Lua MLA (9ú heag.)
ebrary, Inc, agus Juliet E. K. Walker. Encyclopedia of African American Business History. Greenwood Press, 1999.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.