Cita APA (7th ed.)

Air Conditioning Contractors of America, PHCC Educational Foundation, & Refrigeration Service Engineers Society. (2009). HVACR 201. Delmar Cengage Learning.

Cita Chicago (17th ed.)

Air Conditioning Contractors of America, PHCC Educational Foundation, i Refrigeration Service Engineers Society. HVACR 201. Clifton Park, New York: Delmar Cengage Learning, 2009.

Cita MLA (9th ed.)

Air Conditioning Contractors of America, et al. HVACR 201. Delmar Cengage Learning, 2009.