APA
Sewell E., Alphey R., . (1983). British Standard BS 5281 : 1980 : ratings of the sound insulation of post 1970 party walls. Garston, Watford: Building Research Establishment.
Chicago
Sewell E.C, Alphey R.S, . 1983. British Standard BS 5281 : 1980 : ratings of the sound insulation of post 1970 party walls. Garston, Watford: Building Research Establishment.
Harvard
Sewell E., Alphey R., . (1983). British Standard BS 5281 : 1980 : ratings of the sound insulation of post 1970 party walls. Garston, Watford: Building Research Establishment.
MLA
Sewell E.C, Alphey R.S, . British Standard BS 5281 : 1980 : ratings of the sound insulation of post 1970 party walls. Garston, Watford: Building Research Establishment. 1983.
