1. Focal infection of anal origin;Hirschman;J. A. M. A.,1931
2. Fistula-in-ano;Lockhart-Mummery;Lancet,1936
3. Anorectal fistulae;Miles;Post-Grad. Med. Jour.,1936
4. Anal Infections. The Colon, Rectum and Anus;Rankin,1932
5. Anal ducts: comparative and developmental histology;Tucker;Arch. Surg.,1935