Cita APA (7th ed.)

Donoovan John J. Systems Programming. Mc Graw Hill.

Cita Chicago (17th ed.)

Donoovan John J. Systems Programming. Mc Graw Hill.

Cita MLA (9th ed.)

Donoovan John J. Systems Programming. Mc Graw Hill.

Atenció: Aquestes cites poden no estar 100% correctes.