APA (7th ed.) Citation

Crowhurst, N. H. (1965). Graphical calculators and their design. Hayden Book Co..

Chicago Style (17th ed.) Citation

Crowhurst, Norman H. Graphical Calculators and Their Design. New York: Hayden Book Co., 1965.

MLA (9th ed.) Citation

Crowhurst, Norman H. Graphical Calculators and Their Design. Hayden Book Co., 1965.