APA (7th ed.) Citation

Heap, R. D. (1983). Heat pumps (2nd ed.). E. & F.N. Spon.

Chicago Style (17th ed.) Citation

Heap, R. D. Heat Pumps. 2nd ed. London New York: E. & F.N. Spon, 1983.

MLA (9th ed.) Citation

Heap, R. D. Heat Pumps. 2nd ed. E. & F.N. Spon, 1983.