Gaya APA
McCracken, D, D., Garbassi, U. (1982).
A guide to cobol programming (2nd.ed.).
New York:
John Wiley & Sons, Inc..
Gaya MLA
McCracken, Daniel, D., Garbassi, Umberto.
"A guide to cobol programming".
2nd.ed.
New York:
John Wiley & Sons, Inc.,
1982.
Text.