APA
(1993). British pharmacopoeia 1993. Her Majesty's Stationery Office: London.
Chicago
1993. British pharmacopoeia 1993. Her Majesty's Stationery Office: London.
Harvard
(1993). British pharmacopoeia 1993. Her Majesty's Stationery Office: London.
MLA
British pharmacopoeia 1993. Her Majesty's Stationery Office: London. 1993.