Harley, B. (1990). Constructional Toys. Shire Publications Ltd..
Lua i Stíl Chicago (17ú heag.)Harley, Basil. Constructional Toys. Buckinghamshire: Shire Publications Ltd., 1990.
Lua MLA (8ú heag.)Harley, Basil. Constructional Toys. Shire Publications Ltd., 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.