APA (7th ed.) Citation

Quarterman, J. S. (1993). UNIX, POSIX, and open systems: The open standards puzle. Addison-Wesley.

Chicago Style (17th ed.) Citation

Quarterman, John S. UNIX, POSIX, and Open Systems: The Open Standards Puzle. Reading, Massachusetts: Addison-Wesley, 1993.

MLA (9th ed.) Citation

Quarterman, John S. UNIX, POSIX, and Open Systems: The Open Standards Puzle. Addison-Wesley, 1993.