APA
Davis W. S., . (1983). Operating systems. Reading, Mass: Addison-Wesley Pub. Co.
Chicago
Davis William S, . 1983. Operating systems. Reading, Mass: Addison-Wesley Pub. Co.
Harvard
Davis W. S., . (1983). Operating systems. Reading, Mass: Addison-Wesley Pub. Co.
MLA
Davis William S, . Operating systems. Reading, Mass: Addison-Wesley Pub. Co. 1983.