(1977). Structured COBOL / Andreas S. Philippakis, Leonard J. Kazmier.
Chicago Style (17th ed.) CitationStructured COBOL / Andreas S. Philippakis, Leonard J. Kazmier. 1977.
MLA引文Structured COBOL / Andreas S. Philippakis, Leonard J. Kazmier. 1977.
警告：這些引文格式不一定是100％准確.