1. Glover DW. The history of respiratory therapy. Chapter 1. Bloomington: AuthorHouseTM; 2010. p. 1.
2. Lecture to medical students. By Dickinson W. Richards, MD, Lambert Professor of Medicine, College of Physician and Surgeons, Columbia University (personal notes), 1962.
3. Kotu PF. Editorial: mechanical ventilation; Past, present and future. Indian J Anesth. 2007;48(6):430–432.
4. American College of Surgeons Committee on Trauma. ATLS: Advanced Trauma Life Support Program for Doctors. 7th ed. Chicago: American College of Surgeons; 2004.
5. King James English Translation of the Bible. 1611.