Guiler, W. S. (1939). Senior spelling: Constructive and remedial a plan for individualizing study. Harrison and Company.
Lua i Stíl Chicago (17ú heag.)Guiler, Walter Scribner. Senior Spelling: Constructive and Remedial a Plan for Individualizing Study. Columbus, Ohio: Harrison and Company, 1939.
Lua MLA (8ú heag.)Guiler, Walter Scribner. Senior Spelling: Constructive and Remedial a Plan for Individualizing Study. Harrison and Company, 1939.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.