Kay, D. G. (1985). Programming for people: Pascal. Mayfield.
Cita Chicago (17th ed.)Kay, David G. Programming for People: Pascal. Palo Alto, Calif.: Mayfield, 1985.
Cita MLA (9th ed.)Kay, David G. Programming for People: Pascal. Mayfield, 1985.
Atenció: Aquestes cites poden no estar 100% correctes.