توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

South African Bureau of Standards. Standard specification for softwood studs for timber frames in buildings. South African Bureau of Standards.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

South African Bureau of Standards. Standard Specification for Softwood Studs for Timber Frames in Buildings. South Africa: South African Bureau of Standards.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

South African Bureau of Standards. Standard Specification for Softwood Studs for Timber Frames in Buildings. South African Bureau of Standards.