Cita APA (7th ed.)

Deitel, H. M. (1990). An introduction to: Operating systems (Second edition.). Addison-Wesley.

Cita Chicago (17th ed.)

Deitel, H. M. An Introduction to: Operating Systems. Second edition. Massachusetts: Addison-Wesley, 1990.

Cita MLA (8th ed.)

Deitel, H. M. An Introduction to: Operating Systems. Second edition. Addison-Wesley, 1990.