APA
Warren S. &. W. K. G., . (2001). Multiple sclerosis. World Health Organization, Geneva: .
Chicago
Warren Sharon & Warren Kenneth G, . 2001. Multiple sclerosis. World Health Organization, Geneva: .
Harvard
Warren S. &. W. K. G., . (2001). Multiple sclerosis. World Health Organization, Geneva: .
MLA
Warren Sharon & Warren Kenneth G, . Multiple sclerosis. World Health Organization, Geneva: . 2001.