APA
(1991). British Journal of Ophthalmology Vol.75, No.1-6, Jan-June 1991. London: Bristish Medical Association.
Chicago
1991. British Journal of Ophthalmology Vol.75, No.1-6, Jan-June 1991. London: Bristish Medical Association.
Harvard
(1991). British Journal of Ophthalmology Vol.75, No.1-6, Jan-June 1991. London: Bristish Medical Association.
MLA
British Journal of Ophthalmology Vol.75, No.1-6, Jan-June 1991. London: Bristish Medical Association. 1991.
