South African Bureau of Standards. Standard specification for softwood studs for timber frames in buildings. South African Bureau of Standards.
Lua i Stíl Chicago (17ú heag.)South African Bureau of Standards. Standard Specification for Softwood Studs for Timber Frames in Buildings. South Africa: South African Bureau of Standards.
Lua MLA (9ú heag.)South African Bureau of Standards. Standard Specification for Softwood Studs for Timber Frames in Buildings. South African Bureau of Standards.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.