Pigors, P. J. W., & Pigors, F. (1961). Case method in human relations: The incident process. McGraw-Hill.
芝加哥风格引文Pigors, Paul John William, 与 Faith Pigors. Case Method in Human Relations: The Incident Process. New York: McGraw-Hill, 1961.
MLA引文Pigors, Paul John William, 与 Faith Pigors. Case Method in Human Relations: The Incident Process. McGraw-Hill, 1961.
警告：这些引文格式不一定是100％准确.