Allen, C. L., & Hobt, A. W. (1944). Recreation handbook for group leaders. University of Tennessee, Division of university extension.
Lua i Stíl Chicago (17ú heag.)Allen, Catherine Louise, agus Albert Watt Hobt. Recreation Handbook for Group Leaders. Knoxville, Tenn.: University of Tennessee, Division of university extension, 1944.
Lua MLA (8ú heag.)Allen, Catherine Louise, agus Albert Watt Hobt. Recreation Handbook for Group Leaders. University of Tennessee, Division of university extension, 1944.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.