Cita APA (7th ed.)

Deitel, H. M. (1990). An introduction to operating systems (2nd ed.). Addison-Wesley.

Cita Chicago (17th ed.)

Deitel, Harvey M. An Introduction to Operating Systems. 2nd ed. Reading, Mass: Addison-Wesley, 1990.

Cita MLA (9th ed.)

Deitel, Harvey M. An Introduction to Operating Systems. 2nd ed. Addison-Wesley, 1990.