APA
Collins R. J., Harris D., Sparkes W. & Building Research Establishment. (1998). Blocks with recycled aggregate : beam-and-block floors. London: Construction Research Communications Ltd.
Chicago
Collins R J, Harris D.J, Sparkes W and Building Research Establishment. 1998. Blocks with recycled aggregate : beam-and-block floors. London: Construction Research Communications Ltd.
Harvard
Collins R. J., Harris D., Sparkes W. and Building Research Establishment. (1998). Blocks with recycled aggregate : beam-and-block floors. London: Construction Research Communications Ltd.
MLA
Collins R J, Harris D.J, Sparkes W and Building Research Establishment. Blocks with recycled aggregate : beam-and-block floors. London: Construction Research Communications Ltd. 1998.