Miller RE, Tredici TJ (1 August 1992). "Night Vision Manual for the Flight Surgeon". US Department of Defense, Defense Technical Information Center. Archived from the original on January 4, 2022. Retrieved 4 January 2022.
Miller RE, Tredici TJ (1 August 1992). "Night Vision Manual for the Flight Surgeon". US Department of Defense, Defense Technical Information Center. Archived from the original on January 4, 2022. Retrieved 4 January 2022.