Não informado. Reports of the Sleeping Sickness Commission. Royal Society of London.
Chicago-referens (17:e uppl.)Não informado. Reports of the Sleeping Sickness Commission. London: Royal Society of London.
MLA-referens (8:e uppl.)Não informado. Reports of the Sleeping Sickness Commission. Royal Society of London.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.