APA
Butler D., Building Research Establishment, Gigiel A. & Russell S. (2000). Air as a refrigerant in air conditioning systems in buildings. London: CRC Ltd.
Chicago
Butler D.J.G, Building Research Establishment, Gigiel A.J and Russell S.L. 2000. Air as a refrigerant in air conditioning systems in buildings. London: CRC Ltd.
Harvard
Butler D., Building Research Establishment, Gigiel A. and Russell S. (2000). Air as a refrigerant in air conditioning systems in buildings. London: CRC Ltd.
MLA
Butler D.J.G, Building Research Establishment, Gigiel A.J and Russell S.L. Air as a refrigerant in air conditioning systems in buildings. London: CRC Ltd. 2000.