Cita APA (7th ed.)

Lancaster, G. (1972). Programming in COBOL. Pergamon Press.

Cita Chicago (17th ed.)

Lancaster, G.T. Programming in COBOL. Oxford: Pergamon Press, 1972.

Cita MLA (9th ed.)

Lancaster, G.T. Programming in COBOL. Pergamon Press, 1972.

Atenció: Aquestes cites poden no estar 100% correctes.