Gaya APA
GRAUER, R, T.
(1981).
A Cobol Book of Practice and Reference
.
Englewood Cliffs, New Jersey:
Printc-Hall Inc.
Gaya MLA
GRAUER, Robert, T.
"A Cobol Book of Practice and Reference".
Englewood Cliffs, New Jersey:
Printc-Hall Inc,
1981.
Umum.