APA (7th ed.) Citation

Penson, S. B. (1988). Development of a room air conditioner design model. [publisher not identified].

Chicago Style (17th ed.) Citation

Penson, Steven Brad. Development of a Room Air Conditioner Design Model. [Place of publication not identified]: [publisher not identified], 1988.

MLA (9th ed.) Citation

Penson, Steven Brad. Development of a Room Air Conditioner Design Model. [publisher not identified], 1988.