APA (7th ed.) Citation

American Telephone and Telegraph Company. (1990). UNIX System V, release 4: Network user's and administrator's guide. Prentice-Hall.

Chicago Style (17th ed.) Citation

American Telephone and Telegraph Company. UNIX System V, Release 4: Network User's and Administrator's Guide. Englewood Cliffs, N.J: Prentice-Hall, 1990.

MLA (9th ed.) Citation

American Telephone and Telegraph Company. UNIX System V, Release 4: Network User's and Administrator's Guide. Prentice-Hall, 1990.