Não informado. Reports and Notes of the Public Health Laboratories. Ministry of Public Health.
Chicago-referens (17:e uppl.)Não informado. Reports and Notes of the Public Health Laboratories. Cairo: Ministry of Public Health.
MLA-referens (8:e uppl.)Não informado. Reports and Notes of the Public Health Laboratories. Ministry of Public Health.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.