APA (7th ed.) Citation

Sumner, J. A. (1976). Domestic heat pumps. Prism Press.

Chicago Style (17th ed.) Citation

Sumner, John A. Domestic Heat Pumps. Chalmington: Prism Press, 1976.

MLA (9th ed.) Citation

Sumner, John A. Domestic Heat Pumps. Prism Press, 1976.

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