APA
(1998). British pharmacopoeia 1998 : vol. I, II. Stationery office, London: .
Chicago
1998. British pharmacopoeia 1998 : vol. I, II. Stationery office, London: .
Harvard
(1998). British pharmacopoeia 1998 : vol. I, II. Stationery office, London: .
MLA
British pharmacopoeia 1998 : vol. I, II. Stationery office, London: . 1998.