APA
Building Research Establishment, . (1998). Flat roofs : assessing bitumen felt and mastic asphalt roofs for repair. London: Construction Research Communications Ltd.
Chicago
Building Research Establishment, . 1998. Flat roofs : assessing bitumen felt and mastic asphalt roofs for repair. London: Construction Research Communications Ltd.
Harvard
Building Research Establishment, . (1998). Flat roofs : assessing bitumen felt and mastic asphalt roofs for repair. London: Construction Research Communications Ltd.
MLA
Building Research Establishment, . Flat roofs : assessing bitumen felt and mastic asphalt roofs for repair. London: Construction Research Communications Ltd. 1998.