Template:Authority control/doc

Description
This template support links from Wikipedia to various authority control (or Normdaten) library catalogue systems. The Normdaten include:
 * 1) Gemeinsame Körperschaftsdatei (GKD)
 * 2) Personennamendatei (PND)
 * 3) Library of Congress Control Number (LCCN)
 * 4) Virtual International Authority File (VIAF)
 * 5) SELIBR by the National Library of Sweden

Usage
The following data sources are accepted:

Example
  (for Alexander Graham Bell) produces