Philippakis, A. S., & Kazmier, L. J. (1981). Structured COBOL (2nd ed.). McGraw-Hill.
芝加哥风格引文Philippakis, Andreas S., 与 Leonard J. Kazmier. Structured COBOL. 2nd ed. New York: McGraw-Hill, 1981.
MLA引文Philippakis, Andreas S., 与 Leonard J. Kazmier. Structured COBOL. 2nd ed. McGraw-Hill, 1981.
警告：这些引文格式不一定是100％准确.