Gardner, William H.: An analysis of the procedures/techniques employed by the U.S. military services in the administration of their respective aviation instrument qualification and aircraft proficiency evaluation programs, 1977

Gardner, William H.: An analysis of the procedures/techniques employed by the U.S. military services in the administration of their respective aviation instrument qualification and aircraft proficiency evaluation programs, 1977, RG-13- Item N420.F94 1977 no.4, Box: 365, Folder: 19. Student papers, RG-13. Naval War College Archives. https://www.usnwcarchives.org/repositories/2/archival_objects/211364 Accessed April 27, 2024.