Vanthemsche, Guy;De Peuter, Roger.«The Origins of the Medieval Principalities».A Concise History of Belgium. Cambridge University Press,2023.[Consulta: 21 setembre 2026].
Fulbrook, Mary.«The Age of Absolutism, 1648–1815».A Concise History of Germany. Cambridge University Press.[Consulta: 21 setembre 2026].