APA
Collins R. J., Building Research Establishment, . (2001). Porous aggregates in concrete : jurassic limestones. London: CRC Ltd.
Chicago
Collins R J, Building Research Establishment, . 2001. Porous aggregates in concrete : jurassic limestones. London: CRC Ltd.
Harvard
Collins R. J., Building Research Establishment, . (2001). Porous aggregates in concrete : jurassic limestones. London: CRC Ltd.
MLA
Collins R J, Building Research Establishment, . Porous aggregates in concrete : jurassic limestones. London: CRC Ltd. 2001.