APA استشهاد

Philippakis, A. S., & Kazmier, L. J. (1978). Information system through COBOL.- 2nd ed. , (2nd ed. ,.). McGraw-Hill.

استشهاد بنمط شيكاغو

Philippakis, Andreas S., و Leonard J. Kazmier. Information System Through COBOL.- 2nd Ed. ,. 2nd ed. ,. Auckland: McGraw-Hill, 1978.

MLA استشهاد

Philippakis, Andreas S., و Leonard J. Kazmier. Information System Through COBOL.- 2nd Ed. ,. 2nd ed. ,. McGraw-Hill, 1978.