Cita APA

Tyrrell, A., & Sumner, F. (1989). COBOL From Pascal (1st ed. 1989.). London: Palgrave Macmillan UK : Imprint: Palgrave Macmillan.

Citación estilo Chicago

Tyrrell, A.J., y F.H Sumner. COBOL From Pascal. 1st ed. 1989. London: Palgrave Macmillan UK : Imprint: Palgrave Macmillan, 1989.

Cita MLA

Tyrrell, A.J., y F.H Sumner. COBOL From Pascal. 1st ed. 1989. London: Palgrave Macmillan UK : Imprint: Palgrave Macmillan, 1989.