Gaya APA

Levenhagen, John I., Spethmann, Donald H.. (1993). HVAC controls and systems . New York: McGraw Hill.

Gaya Chicago

Levenhagen, John I., Spethmann, Donald H.. HVAC controls and systems. New York: McGraw Hill, 1993. Text.

Gaya MLA

Levenhagen, John I., Spethmann, Donald H.. HVAC controls and systems. New York: McGraw Hill, 1993. Text.

Gaya Turabian

Levenhagen, John I., Spethmann, Donald H.. HVAC controls and systems. New York: McGraw Hill, 1993. Print.