Não informado. (2008). B-ENT. Royal Belgian Society for Ear, Nose, Throat, Head and Neck Surgery.
Chicago-referens (17:e uppl.)Não informado. B-ENT. Leuven, Belgica: Royal Belgian Society for Ear, Nose, Throat, Head and Neck Surgery, 2008.
MLA-referens (8:e uppl.)Não informado. B-ENT. Royal Belgian Society for Ear, Nose, Throat, Head and Neck Surgery, 2008.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.