Keliher, A. V., Hess, F., LeBron, M., & Modley, R. (1939). Air workers. Harper and Brothers.
Lua i Stíl Chicago (17ú heag.)Keliher, Alice Virginia, Franz Hess, Marion LeBron, agus Rudolf Modley. Air Workers. New York : London: Harper and Brothers, 1939.
Lua MLA (8ú heag.)Keliher, Alice Virginia, et al. Air Workers. Harper and Brothers, 1939.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.