Kay, J., & Kummerfeld, B. (1989). C programming in a UNIX environment. National Book Store.
Chicago Style aipamenaKay, Judy, and Bob Kummerfeld. C Programming in a UNIX Environment. Manila: National Book Store, 1989.
MLA aipamenaKay, Judy, and Bob Kummerfeld. C Programming in a UNIX Environment. National Book Store, 1989.
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