APA (7th ed.) Citation

Philippakis, A. S., & Kazmier, L. J. (1981). Structured COBOL (Second edition.). National Book Store.

Chicago Style (17th ed.) Citation

Philippakis, Andreas S., and Leonard J. Kazmier. Structured COBOL. Second edition. Manila: National Book Store, 1981.

MLA (9th ed.) Citation

Philippakis, Andreas S., and Leonard J. Kazmier. Structured COBOL. Second edition. National Book Store, 1981.