APA-viite (7. p.)

Levenhagen, J. I., & Spethmann, D. H. (1993). HVAC controls and systems. McGraw-Hill.

Chicago-viite (17. p.)

Levenhagen, John I., ja Donald H. Spethmann. HVAC Controls and Systems. New York: McGraw-Hill, 1993.

MLA-viite (9. p.)

Levenhagen, John I., ja Donald H. Spethmann. HVAC Controls and Systems. McGraw-Hill, 1993.