APA

Katzan H., . (1973). Operating systems: a pragmatic approach. New York: Van Nostrand Reinhold Co.

Chicago

Katzan Harry, . 1973. Operating systems: a pragmatic approach. New York: Van Nostrand Reinhold Co.

Harvard

Katzan H., . (1973). Operating systems: a pragmatic approach. New York: Van Nostrand Reinhold Co.

MLA

Katzan Harry, . Operating systems: a pragmatic approach. New York: Van Nostrand Reinhold Co. 1973.