Cita APA (7a ed.)

Berrudez Villegas, J., & Kamaid, E. (1982). Anal fissure: Diagnostic and therapeutic considerations with special reference to internal lateral sphincterotomy.

Cita Chicago Style (17a ed.)

Berrudez Villegas, Jorge, y Emil Kamaid. Anal Fissure: Diagnostic and Therapeutic Considerations with Special Reference to Internal Lateral Sphincterotomy. 1982.

Cita MLA (9a ed.)

Berrudez Villegas, Jorge, y Emil Kamaid. Anal Fissure: Diagnostic and Therapeutic Considerations with Special Reference to Internal Lateral Sphincterotomy. 1982.