APA (7th ed.) Citation

Troy, D. (1990). UNIX Systems. Radison-Wesley Publishing Co..

Chicago Style (17th ed.) Citation

Troy, Douglas. UNIX Systems. New York: Radison-Wesley Publishing Co., 1990.

MLA (9th ed.) Citation

Troy, Douglas. UNIX Systems. Radison-Wesley Publishing Co., 1990.

Warning: These citations may not always be 100% accurate.