Häußler, Matthias. “Review: Peter Curson, Border Conflicts in a German African Colony. Jakob Morengo and the Untold Tragedy of Edward Presgrave, Arena Books 2012”. Journal of Namibian Studies : History Politics Culture 130 (June 10, 2014): 105-107. Accessed January 24, 2021. https://namibian-studies.com/index.php/JNS/article/view/135.