Armfield, F. L. (2011). Eugene Kinckle Jones: The National Urban League and Black social work, 1910-40. University of Illinois Press.
芝加哥风格引文Armfield, Felix L. Eugene Kinckle Jones: The National Urban League and Black Social Work, 1910-40. Urbana: University of Illinois Press, 2011.
MLA引文Armfield, Felix L. Eugene Kinckle Jones: The National Urban League and Black Social Work, 1910-40. University of Illinois Press, 2011.
警告：这些引文格式不一定是100％准确.