Enssle, Manfred J. Stresemann's Territorial Revisionism: Germany, Belgium, and the Eupen-Malmédy Question, 1919-1929. Wiesbaden: Steiner. 1980. ISBN 9783515029599.
O'Connell, Vincent. Dictating Democracy: the Impact of Governor Baltia's Transitory Regime on Local Government In Eupen-Malmedy, 1919-1922-1925. The International Journal of Regional and Local Studies. 2011, 7 (1–2): 162–87. S2CID 153820141. doi:10.1179/jrl.2011.7.1-2.162.
O'Connell, Vincent. The Annexation of Eupen-Malmedy: Becoming Belgian, 1919-1929. New York: Palgrave Macmillan. 2018. ISBN 978-1-137-59089-3.