APA (7th ed.) Citation

Katzan, H. (1979). Introduction to computers and data processing. D. Van Nostrand.

Chicago Style (17th ed.) Citation

Katzan, Harry. Introduction to Computers and Data Processing. New York: D. Van Nostrand, 1979.

MLA (9th ed.) Citation

Katzan, Harry. Introduction to Computers and Data Processing. D. Van Nostrand, 1979.