Gaya APA

Faber, O. et al (1989). Faber Kells heating and air conditioning of building : with som notes on combined heat and fower (7th ed.). London: Butterworths.

Gaya MLA

Faber, Oscar. et al. "Faber Kells heating and air conditioning of building : with som notes on combined heat and fower". 7th ed. London: Butterworths, 1989. Text.