HARKNESS, S. P. (1976). Building Without Barries For The Disable Sarah P. Harkness And Jmaes N. Groom. Watson-Guptill.
Lua i Stíl Chicago (17ú heag.)HARKNESS, Sarah P. Building Without Barries For The Disable Sarah P. Harkness And Jmaes N. Groom. Watson-Guptill, 1976.
Lua MLA (8ú heag.)HARKNESS, Sarah P. Building Without Barries For The Disable Sarah P. Harkness And Jmaes N. Groom. Watson-Guptill, 1976.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.