APA

British Standard 0812:1976 Part 4, . (1976). Sampling and testing of mineral aggregates, sands and fillers. British standard methods. Part 4. Chemical properties. London: British Standard 0812:1976 Part 4.

Chicago

British Standard 0812:1976 Part 4, . 1976. Sampling and testing of mineral aggregates, sands and fillers. British standard methods. Part 4. Chemical properties. London: British Standard 0812:1976 Part 4.

Harvard

British Standard 0812:1976 Part 4, . (1976). Sampling and testing of mineral aggregates, sands and fillers. British standard methods. Part 4. Chemical properties. London: British Standard 0812:1976 Part 4.

MLA

British Standard 0812:1976 Part 4, . Sampling and testing of mineral aggregates, sands and fillers. British standard methods. Part 4. Chemical properties. London: British Standard 0812:1976 Part 4. 1976.