WILBER, G. (1954). Industrial arts in general Education. International Textbook Company.
Lua i Stíl Chicago (17ú heag.)WILBER, Gordon. Industrial Arts in General Education. International Textbook Company, 1954.
Lua MLA (8ú heag.)WILBER, Gordon. Industrial Arts in General Education. International Textbook Company, 1954.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.