APA (7e ed.) Bronvermelding

Philippakis, A. S., & Kazmier, L. J. (1981). Structured COBOL (2nd ed.). McGraw-Hill.

Chicago (17e ed.) Bronvermelding

Philippakis, Andreas S., en Leonard J. Kazmier. Structured COBOL. 2nd ed. New York: McGraw-Hill, 1981.

MLA (9e ed.) Bronvermelding

Philippakis, Andreas S., en Leonard J. Kazmier. Structured COBOL. 2nd ed. McGraw-Hill, 1981.