Cita APA (7a ed.)

(1993). SCO UNIX Operating system: Version 4.2, release notes (1a. ed.). SCO USA.

Cita Chicago Style (17a ed.)

SCO UNIX Operating System: Version 4.2, Release Notes. 1a. ed. SCO USA, 1993.

Cita MLA (8a ed.)

SCO UNIX Operating System: Version 4.2, Release Notes. 1a. ed. SCO USA, 1993.