Gaya APA
Structured Cobol Fundamentals and Style. (1986).
California:
Myfield Publishing.
Gaya Chicago
Structured Cobol Fundamentals and Style.
ed.2.
California:
Myfield Publishing,
1986.
.
Gaya MLA
Structured Cobol Fundamentals and Style.
ed.2.
California:
Myfield Publishing,
1986.
.
Gaya Turabian
Structured Cobol Fundamentals and Style.
California:
Myfield Publishing,
1986.
.