1. Abnormal fetal presentations;Johnson;Lancet,1964
2. Face and brow presentations;Copeland;N C Med J,1968
3. Diagnosis and management of face presentation;Duff;Obstet Gynecol,1981
4. Face and brow presentation;Magid;Obstet Gynecol,1957
5. Face presentation;Salzmann;Obstet Gynecol,1960