APA (7th ed.) Citation

Sutherland, I. E. (1980). Sketchpad: A man-machine graphical communication system. Garland.

Chicago Style (17th ed.) Citation

Sutherland, Ivan E. Sketchpad: A Man-machine Graphical Communication System. New York: Garland, 1980.

MLA (9th ed.) Citation

Sutherland, Ivan E. Sketchpad: A Man-machine Graphical Communication System. Garland, 1980.

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