APA
Butler D., Building Research Establishment, . (1993). Phase-out of CFCs: guidance for owners and operators of air conditioning systems. Garston, Watford: Building Research Establishment.
Chicago
Butler D.J.G, Building Research Establishment, . 1993. Phase-out of CFCs: guidance for owners and operators of air conditioning systems. Garston, Watford: Building Research Establishment.
Harvard
Butler D., Building Research Establishment, . (1993). Phase-out of CFCs: guidance for owners and operators of air conditioning systems. Garston, Watford: Building Research Establishment.
MLA
Butler D.J.G, Building Research Establishment, . Phase-out of CFCs: guidance for owners and operators of air conditioning systems. Garston, Watford: Building Research Establishment. 1993.