account of Maritz's Rebellion in the North-West, the alliance with the Germans, the clashes on the Orange River (including the little-known Battleof Kakamas)
[2021-07-08]. (原始内容 (PDF)存档于2020-11-11). Kaiser Wilhelm of Germany and Czar Nicholas of Russia exchange telegrams - Jul 29, 1914 - HISTORY.com. [2016-10-01]