Coetzer, Owen, The Anglo-Boer War: The road to Infamy, 1899–1900, 武器和盔甲, 1996 (Claimed (p. 30) 1899年11月15日博塔在火车上伏击捉获丘吉尔)
Farwell, Bryon. The Great Boer War, Allen Lane, London, 1976. (insights of Botha)
Williams, Basil. 博塔、史末资和南非(Botha Smuts and South Africa), 伦敦霍德和斯托顿出版社, 1946年. (博塔、史末资的全面评论, or as William's titled them in the last chapter of this book par nobile fratrum(p. 203)