Jabarkan Bacaan lanjut dari Perang Köln

Benians, Ernest Alfred, et al. The Cambridge Modern History. New York: MacMillan, 1905.

Black, Jeremy. European warfare, 1494–1660. New York: Routledge, 2002 .

Brady, Thomas, et al. Handbook of European history, 1400–1600. v. 2. Leiden: Brill, 1995 .

Brodek, Theodor V. "Socio-Political Realities of the Holy Roman Empire", Journal of Interdisciplinary History, 1971, 1(3), pp. 395–405.

Davies, Charles Maurice. The History of Holland and the Dutch Nation. London: G. Willis, 1851.

Dotzauer, Winifred. Die Deutschen Reichskreise, 1377–1803, Stuttgart: Steiner, 1998, .

Encyclopedia Americana. "Chapter", New York: Encyclopedia Americana, 1918.

Ennen, Leonard. Geschichte der Stadt Köln. Düsseldorf: Schwann'schen, 1863–1880.

Götz (Goetz), Walter. "Gebhard II and the Counter Reformation in the Lower Rhinelands", Schaff Herzog Encyclopedia of Religious Knowledge. Johann Jakob Herzog (ed.). v. 4, New York: Funk and Wagnalls, 1909, pp. 439–441.

Heal, Bridget. The Cult of the Virgin Mary in Early Modern Germany: Protestant and Catholic Piety, 1500–1648. Cambridge: Cambridge University Press, 2007, .

Hennes, Johann Heinrich. Der Kampf um das Erzstift Köln zur Zeit der Kurfürsten. Köln: DuMont-Schauberg, 1878.

Holborn, Hajo. A History of Modern Germany, The Reformation. Princeton: Princeton University Press, 1959 [1982], .

Hsia, Po-chia. Social Discipline in the Reformation. New York: Routledge, 1989, .

Israel, Jonathan I. Conflict of empires: Spain, the Lowlands, and the struggle for world supremacy, 1585–1713. London: Hamblin, 2003, .

Jackson, Samuel Macauley. "Communal Life", in Schaff Herzog Encyclopedia of Religious Knowledge. Johann Jakob Herzog (ed.). v. 3, New York: Funk and Wagnalls, 1909, pp. 7–8.

Jardine, Lisa. The Awful End of William the Silent: The First Assassination of a Head of State with A Handgun. London: Harper Collins, 2005, .

Jedin, Hubert.  Konciliengeschichte. Freiburg: Herder, 1980, .

MacCaffrey, Wallace T. Elizabeth I: War and Politics, 1588–1603. Princeton: Princeton University Press, 1994, .

MacCulloch, Dairmaid. The Reformation. New York: Viking, 2003, .

Meister, Aloys. Der Strassburger Kapitelstreit, 1583–1592. Strassburg: Heit, 1899.

Parker, Geoffrey. The Thirty Years Wars, 1618–1648. New York: Routledge, 1997 (second edition), .

Parker, Geoffrey. The Army of Flanders and the Spanish Road, 1567–1659. Cambridge: Cambridge University Press, 2004, .

Schenck, A.D. (Alexander DuBois). Rev. William Schenck, his Ancestry and his Descendants. Washington: Darby, 1883.

Schiller, Friedrich. History of the Thirty Years War in Morrison, Alexander James William, ed. The Works of Frederick Schiller. Bonn: np, 1843.

Scribner, Robert W. . "Why Was There No Reformation in Cologne?", Bulletin of the Institute of Historical Research. (1976), 49: 217–241.

Sutherland, N.M. "Origins of the Thirty Years' War and the Structure of European Politics." The English Historical Review, 1992, 107 (424): pp. 587–625.

Tappert, Theodore Gerhardt. The Book of Concord: the confessions of the Evangelical Lutheran Church. Minneapolis, Minnesota: Augsburg Fortress Press, 1959. .

Tenison, Eva Mabel. Elizabethan England. Glasgow: Glasgow University Press, 1932.

Waldburg, Michaela. Waldburg und Waldburger – Ein Geschlecht steigt auf in den Hochadel des Alten Reiches. Switzerland: TLC Michaela Waldburger, 2009, Accessed 15 October 2009.

Weyden, Ernst. Godesberg, das Siebengebirge, und ihre Umgebung. Bonn: T. Habicht Verlag, 1864.

Wernham, Richard Bruce. The New Cambridge Modern History: The Counter Reformation and Price Revolution 1559–1610. Vol. 3. Cambridge: Cambridge University Press, 1971, pp. 338–345.