APA (7th ed.) Citation

Curry, W. W., Jr. (1968). System software for on-line display support. [publisher not identified].

Chicago Style (17th ed.) Citation

Curry, Walter Wilson, Jr. System Software for On-line Display Support. [College Station, Tex.]: [publisher not identified], 1968.

MLA (9th ed.) Citation

Curry, Walter Wilson, Jr. System Software for On-line Display Support. [publisher not identified], 1968.