Government

Wikipedia - Heads of Government - List of prime ministers from 1921 to present day.
http://en.wikipedia.org/wiki/Prime_Minister_of_Liechtenstein

CIA - Chiefs of State and Cabinet Members of Foreign Governments: Liechtenstein - List of government officials and their titles, updated weekly. Also includes the head of the central bank, ambassadors to the United States and Permanent Representatives to the UN, New York.
https://www.cia.gov/library/publications/world-leaders-1/world-leaders-l/liechtenstein.html

US Law Library of Congress - Liechtenstein - Annotated compendium of online sources providing access to primary documents, legal commentary and general government information about specific jurisdictions and topics.
http://www.loc.gov/law/help/guide/nations/liechtenstein.html

Princely House of Liechtenstein - Official site of the princely house. Biographies of members, current program for governing the principality, and speeches of the reigning prince, Hans-Adam II.
http://www.fuerstenhaus.li/

World Legal Information Institute - Liechtenstein - Catalog and search facilities for over 500 databases from 55 countries including case-law, legislation, treaties, law reform reports, law journals, and other materials.
http://www.worldlii.org/catalog/2776.html

Liechtenstein's case before the International Court of Justice - Lawsuit filed by the country against Germany relating to property confiscated in Czechoslovakia and lack of compensation. Details of case background, persons involved and further links relating to the case.
http://www.liechtenstein-icj-case.de/