Cita APA (7a ed.)

Porges, F. (1991). HVAC engineer's handbook (9th ed.). Butterworths-Heinemann.

Cita Chicago Style (17a ed.)

Porges, F. HVAC Engineer's Handbook. 9th ed. Oxford ; Boston: Butterworths-Heinemann, 1991.

Cita MLA (8a ed.)

Porges, F. HVAC Engineer's Handbook. 9th ed. Butterworths-Heinemann, 1991.