APA
(1994). British Medical Journal No.6920-6932 Jan-March 1994. London: Bristish Medical Association.
Chicago
1994. British Medical Journal No.6920-6932 Jan-March 1994. London: Bristish Medical Association.
Harvard
(1994). British Medical Journal No.6920-6932 Jan-March 1994. London: Bristish Medical Association.
MLA
British Medical Journal No.6920-6932 Jan-March 1994. London: Bristish Medical Association. 1994.
