APA (7th ed.) Citation

Dries, R., & Dries, W. (1986). HVAC contracting. Craftsman Book Co..

Chicago Style (17th ed.) Citation

Dries, Robert, and William Dries. HVAC Contracting. Carlsbad, Calif.: Craftsman Book Co., 1986.

MLA (9th ed.) Citation

Dries, Robert, and William Dries. HVAC Contracting. Craftsman Book Co., 1986.