FRIJHOFF, W. E. Jacques, Philippe Cospeau. Un ami-ennemi de Richelieu 1571-1646. BMGN - Low Countries Historical Review, [S. l.], v. 106, n. 2, p. 270–271, 1991. DOI: 10.18352/bmgn-lchr.3389. Disponível em: https://bmgn-lchr.nl/article/view/URN%3ANBN%3ANL%3AUI%3A10-1-103855. Acesso em: 13 apr. 2024.