Libert, L. (2001). Der Burgturm Vierraden. Angermünder Heimatkalender.
Chicago Style (17th ed.) CitationLibert, Lutz. "Der Burgturm Vierraden." Angermünder Heimatkalender 2001.
MLA (8th ed.) CitationLibert, Lutz. "Der Burgturm Vierraden." Angermünder Heimatkalender, 2001.
Warning: These citations may not always be 100% accurate.