Axtelle, G. E., & Wattenberg, W. W. (1940). Teachers for democracy: Walter Anderson, Frank Baker, neal Billings [and others]. D. Appleton-Century company, incorporated.
Lua i Stíl Chicago (17ú heag.)Axtelle, George Edward, agus William W. Wattenberg. Teachers for Democracy: Walter Anderson, Frank Baker, Neal Billings [and Others]. New York, London: D. Appleton-Century company, incorporated, 1940.
Lua MLA (9ú heag.)Axtelle, George Edward, agus William W. Wattenberg. Teachers for Democracy: Walter Anderson, Frank Baker, Neal Billings [and Others]. D. Appleton-Century company, incorporated, 1940.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.