ebrary, Inc, & Tracy, S. C. (2004). A historical guide to Langston Hughes. Oxford University Press.
芝加哥风格引文ebrary, Inc, 与 Steven C. Tracy. A Historical Guide to Langston Hughes. New York: Oxford University Press, 2004.
MLA引文ebrary, Inc, 与 Steven C. Tracy. A Historical Guide to Langston Hughes. Oxford University Press, 2004.
警告：这些引文格式不一定是100％准确.