APA Citation

LEVENHAGEN, & spethmann. (1993). HVAC controls and systems. New York: McGraw Hill.

Chicago Style Citation

LEVENHAGEN, and spethmann. HVAC Controls and Systems. New York: McGraw Hill, 1993.

MLA Citation

LEVENHAGEN, and spethmann. HVAC Controls and Systems. New York: McGraw Hill, 1993.

Warning: These citations may not always be 100% accurate.