"Parties in Liechtenstein 1921-1943". Prince and People: Liechtenstein Civics (in German). School Office of the Principality of Liechtenstein. 2007. Archived from the original on 1 August 2012. Retrieved 13 February 2014.
e-archiv.li
"Vaterländische Union". e-archiv.li (in German). Liechtenstein National Archives. Retrieved 22 February 2014.
"Parties in Liechtenstein 1921-1943". Prince and People: Liechtenstein Civics (in German). School Office of the Principality of Liechtenstein. 2007. Archived from the original on 1 August 2012. Retrieved 13 February 2014.