APA (7th ed.) Citation

American Telephone and Telegraph Company. (1990). System V application binary interface: UNIX System V. Prentice-Hall.

Chicago Style (17th ed.) Citation

American Telephone and Telegraph Company. System V Application Binary Interface: UNIX System V. Englewood Cliffs, N.J.: Prentice-Hall, 1990.

MLA (9th ed.) Citation

American Telephone and Telegraph Company. System V Application Binary Interface: UNIX System V. Prentice-Hall, 1990.