Não informado. (2020). South African National Scientific Programmes Report. National Scientific Programmes Unit, Council for Scientific and Industrial Research.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Não informado. South African National Scientific Programmes Report. Pretoria, Africa do Sul: National Scientific Programmes Unit, Council for Scientific and Industrial Research, 2020.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Não informado. South African National Scientific Programmes Report. National Scientific Programmes Unit, Council for Scientific and Industrial Research, 2020.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.