APA (7th ed.) Citation

UNIX System Laboratories. (1992). Programmer's reference manual, operating system API for Intel processors: UNIX system V, release 4. Prentice Hall.

Chicago Style (17th ed.) Citation

UNIX System Laboratories. Programmer's Reference Manual, Operating System API for Intel Processors: UNIX System V, Release 4. Englewood Cliffs, N.J.: Prentice Hall, 1992.

MLA (9th ed.) Citation

UNIX System Laboratories. Programmer's Reference Manual, Operating System API for Intel Processors: UNIX System V, Release 4. Prentice Hall, 1992.