Abbott, Ira H.; von Doenhoff, Albert E. & Stivers, Louis S., Jr. Summary of Airfoil Data, report, 1945; (https://digital.library.unt.edu/ark:/67531/metadc65534/m1/18/: accessed May 23, 2024), University of North Texas Libraries, UNT Digital Library, digital.library.unt.edu; .