APA (7th ed.) Citation

Kay, J., & Kummerfeld, B. (1988). C programming in UNIX environment (1. print.). Addison-Wesley.

Chicago Style (17th ed.) Citation

Kay, Judy, and Bob Kummerfeld. C Programming in UNIX Environment. 1. print. Sydney [u.a.]: Addison-Wesley, 1988.

MLA (9th ed.) Citation

Kay, Judy, and Bob Kummerfeld. C Programming in UNIX Environment. 1. print. Addison-Wesley, 1988.