1. “Rigid Endoscopes; Proper Care and Maintenance,”;MacDonald;AORN Journal,1984
2. “Rigid Endoscopes: Part II, Telescopes, Light Cables, Light Sources,”;MacDonald;AORN Journal,1984
3. Pediatric Endoscopy;Gans,1983
4. “The development of the modern endoscope.”;Hopkins;National News,1980
5. Laparoscopy;Phillips,1977