Transvaal (Colony). Geological Survey & Transvaal (Colony). Mines Dept. Report of the Geological Survey for the year ... Govt. Print. and Stationery Office.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Transvaal (Colony). Geological Survey و Transvaal (Colony). Mines Dept. Report of the Geological Survey for the Year ... Pretoria: Govt. Print. and Stationery Office.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Transvaal (Colony). Geological Survey و Transvaal (Colony). Mines Dept. Report of the Geological Survey for the Year ... Govt. Print. and Stationery Office.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.