Warren, S., & Warren, K. G. (2001). Multiple sclerosis. World Health Organisation.
Chicago Edition CitationWarren, Sharon, i Kenneth G. Warren. Multiple Sclerosis. Geneva: World Health Organisation, 2001.
Cita MLAWarren, Sharon, i Kenneth G. Warren. Multiple Sclerosis. World Health Organisation, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.