Waples, D. (1939). Investigating library problems. University of Chicago Press.
芝加哥风格引文Waples, Douglas. Investigating Library Problems. Chicago, Ill: University of Chicago Press, 1939.
MLA引文Waples, Douglas. Investigating Library Problems. University of Chicago Press, 1939.
警告：这些引文格式不一定是100％准确.