South African Bureau of Standards. Standard specification for softwood studs for timber frames in buildings. South African Bureau of Standards.
Цитирование в стиле Чикаго (17-е изд.)South African Bureau of Standards. Standard Specification for Softwood Studs for Timber Frames in Buildings. South Africa: South African Bureau of Standards.
Цитирование MLA (9-е изд.)South African Bureau of Standards. Standard Specification for Softwood Studs for Timber Frames in Buildings. South African Bureau of Standards.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.