Flug. The Negro in Illinois. University of Illinois Press.
芝加哥风格引文Flug. The Negro in Illinois. University of Illinois Press.
MLA引文Flug. The Negro in Illinois. University of Illinois Press.
警告：这些引文格式不一定是100％准确.
APA引文
Flug. The Negro in Illinois. University of Illinois Press.
芝加哥风格引文Flug. The Negro in Illinois. University of Illinois Press.
MLA引文Flug. The Negro in Illinois. University of Illinois Press.