Featherstone, W. B. 1. (1950). A functional curriculum for youth.
Lua i Stíl Chicago (17ú heag.)Featherstone, William Bland 1900. A Functional Curriculum for Youth. New York, 1950.
Lua MLA (9ú heag.)Featherstone, William Bland 1900. A Functional Curriculum for Youth. 1950.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.