Cita APA (7th ed.)

Sordillo, D. A. (1978). The programmer's ANSI COBOL reference manual. Prentice-Hall.

Cita Chicago (17th ed.)

Sordillo, Donald A. The Programmer's ANSI COBOL Reference Manual. Englewood Cliffs, N.J.: Prentice-Hall, 1978.

Cita MLA (9th ed.)

Sordillo, Donald A. The Programmer's ANSI COBOL Reference Manual. Prentice-Hall, 1978.

Atenció: Aquestes cites poden no estar 100% correctes.