Richard S. Dunn, The Age of Religious Wars, 1559–1689 (New York, 1970), p. 6 (Данн Р. Эпоха религиозных войн. – М.: Центрополиграф, 2011.); James D. Tracy, Charles V, Impresario of War: Campaign Strategy, International Finance, and Domestic Politics (Cambridge, 2002), pp. 45–47, 306