Downs, R. B., & Keller, C. D. (1975). How to do library research (2d ed.). University of Illinois Press.
芝加哥风格引文Downs, Robert Bingham, 与 Clara D. Keller. How to Do Library Research. 2d ed. Urbana: University of Illinois Press, 1975.
MLA引文Downs, Robert Bingham, 与 Clara D. Keller. How to Do Library Research. 2d ed. University of Illinois Press, 1975.
警告：这些引文格式不一定是100％准确.