Smith, Charles C., Jr.; Lovell, Powell M., Jr. & Bates, William R. Effect of the proximity of the ground on the stability and control characteristics of a vertically rising airplane model in the hovering condition. UNT Digital Library. http://digital.library.unt.edu/ark:/67531/metadc58957/. Accessed June 3, 2015.
Note: Inconsistencies in capitalization and punctuation within the Digital Library may affect this citation. Before using this citation in formal writing, please consult your preferred style manual. More information.