APA aipamena

Kazmier, L. J., & Philippakis, A. S. (1991). Comprehensive COBOL.

Chicago Style aipamena

Kazmier, Leonard J., and Andrew S. Philippakis. Comprehensive COBOL. New York, McGraw Hill, 1991.

MLA aipamena

Kazmier, Leonard J., and Andrew S. Philippakis. Comprehensive COBOL. 1991.