Schafer, W. J. (1972). Schafer's cases: The hard-to-find ones. C. C. Thomas.
芝加哥风格引文Schafer, William J. Schafer's Cases: The Hard-to-find Ones. Springfield, Ill.: C. C. Thomas, 1972.
MLA引文Schafer, William J. Schafer's Cases: The Hard-to-find Ones. C. C. Thomas, 1972.
警告：这些引文格式不一定是100％准确.