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Bằng các ngôn ngữ khác
Bursik, Heinrich (1998). "Die Herrschaft Hohenberg und die Markgrafschaft Burgau". . For Google-translated English version . Retrieved July 9, 2006.
"Das Fürstenhaus Bentheim-Tecklenburg". . For Google-translated English version, see . Retrieved July 11, 2006.
Höckmann, Thomas (2006). "Territorial arrangement of North Rhine-Westphalia 1789". (Translation from the original in German through Google Search). [liên kết hỏng]. (Excellent articles and links about the States of the Holy Roman Empire). Retrieved June 26, 2006.
"Mittelalterliche Genealogie im Deutschen Reich bis zum Ende der Staufer". . Retrieved June 23, 2006.
Ortwein, Friedrich J. "Die Herren zu Rappoltstein" (The Lords of Rappoltstein)". [liên kết hỏng]. (For English translation: ). Retrieved June 25, 2006.
"Die Reichsstände". . Retrieved July 8, 2006.
Wember, Heinz. "Die Genealogie (Genealogy) von Montfort: Bludenz, Bregenz, Feldkirch, Heiligenberg, Herrenberg, Langenargen, Pfullendorf, Rheinegg, Rothenfels, Sargans, Tettnang, Tosters, Tübingen, Vaduz, Wasserburg, Werdenberg, Zollern". . Retrieved June 23, 2006.
