• Petrus Jacobus Joubert 

      Wormser, J. A. (Johan Adam), 1807-1862 (Haarlem : H.D. Tjeenk Willink & Zoon, 1900)
      Dutch biography of General Petrus Jacobus Joubert.
    • Petrus Jacobus Joubert 

      Boer, P. R. O. (Dordrecht : Morks, 1900)
      Dutch biography of General Petrus Jacobus Joubert.
    • Petrus Jacobus Joubert 

      Boer, P. R. O. (Dordrecht : Morks, 1900)
      Dutch biography of General Petrus Jacobus Joubert.