(1966). ARS guide to work simplification.
Lua i Stíl Chicago (17ú heag.)ARS Guide to Work Simplification. 1966.
Lua MLA (9ú heag.)ARS Guide to Work Simplification. 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)