APA (7th ed.) Zitazioa

Armfield, F. L. (2011). Eugene Kinckle Jones: The National Urban League and Black social work, 1910-40. University of Illinois Press.

Chicago Style (17th ed.) Zitazioa

Armfield, Felix L. Eugene Kinckle Jones: The National Urban League and Black Social Work, 1910-40. Urbana: University of Illinois Press, 2011.

MLA (9th ed.) Zitazioa

Armfield, Felix L. Eugene Kinckle Jones: The National Urban League and Black Social Work, 1910-40. University of Illinois Press, 2011.