APA Citation

IBM. (1981). IBM DOS/VS COBOL (5a. ed.). New York: IBM.

Chicago Style Citation

IBM. IBM DOS/VS COBOL. 5a. ed. New York: IBM, 1981.

MLA Citation

IBM. IBM DOS/VS COBOL. 5a. ed. New York: IBM, 1981.

Warning: These citations may not always be 100% accurate.