APA
British Pharmacopoeia Commission, . (1981). British approved names 1981. Her Majesty Stationery Office, London: .
Chicago
British Pharmacopoeia Commission, . 1981. British approved names 1981. Her Majesty Stationery Office, London: .
Harvard
British Pharmacopoeia Commission, . (1981). British approved names 1981. Her Majesty Stationery Office, London: .
MLA
British Pharmacopoeia Commission, . British approved names 1981. Her Majesty Stationery Office, London: . 1981.