Cita APA (7th ed.)

Dowdy, L., & Lowery, C. (1993). P.S. to operating systems. Prentice Hall International.

Cita Chicago (17th ed.)

Dowdy, Larry, i Craig Lowery. P.S. to Operating Systems. Englewood Cliffs, NJ: Prentice Hall International, 1993.

Cita MLA (9th ed.)

Dowdy, Larry, i Craig Lowery. P.S. to Operating Systems. Prentice Hall International, 1993.