APA (7th ed.) Citation

Fleming, M. A. (1995). A system for objective usability metrics. [publisher not identified].

Chicago Style (17th ed.) Citation

Fleming, Mark Alexander. A System for Objective Usability Metrics. [Place of publication not identified]: [publisher not identified], 1995.

MLA (9th ed.) Citation

Fleming, Mark Alexander. A System for Objective Usability Metrics. [publisher not identified], 1995.