Não informado. (2004). Half-yearly abstract of the medical sciences. [s.n.].
Chicago-referens (17:e uppl.)Não informado. Half-yearly Abstract of the Medical Sciences. London: [s.n.], 2004.
MLA-referens (8:e uppl.)Não informado. Half-yearly Abstract of the Medical Sciences. [s.n.], 2004.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.