Gaya APA
Steve, T, J., Douglas, K, D.
(1986).
ANSI Structured Cobol An Introduction
.
Illinois:
Irwin Homewood.
Gaya MLA
Steve, Teglovic, Jr,., Douglas, Kenneth, D.
"ANSI Structured Cobol An Introduction".
Illinois:
Irwin Homewood,
1986.
Text.