APA ציטוט

Abel, P. (1989). COBOL programming: A structured approach (3rd ed.). Prentice Hall.

Chicago Style (17th ed.) Citation

Abel, Peter. COBOL Programming: A Structured Approach. 3rd ed. Englewood Cliffs, N.J.: Prentice Hall, 1989.

ציטוט MLA

Abel, Peter. COBOL Programming: A Structured Approach. 3rd ed. Prentice Hall, 1989.