Não informado. (1930). The Journal of Social Psychology. Heldref Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. The Journal of Social Psychology. Washington: Heldref Publications, 1930.
Lua MLA (8ú heag.)Não informado. The Journal of Social Psychology. Heldref Publications, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.