Source Information

• Leader data source information

  Primary source:

  Wolfram|Alpha Knowledgebase, 2024.

  Background sources and references:

  • Archontology.org. Archontology.org.
  • Cahoon, B. M. WorldStatesmen.org .
  • de Zárate, Roberto Ortiz. Zárate's Political Collections (ZPC).
  • Innvista. "Leaders of the World."
  • Knight, K. "Catholic Encyclopedia: List of Popes." New Advent.
  • Library of Congress. "Chronological List of Presidents, First Ladies, and Vice Presidents of the United States." Prints & Photographs Reading Room.
  • Schemmel, B. Rulers.
  • United States Central Intelligence Agency. World Leaders.
  • UNRV.com. "Byzantine Emperor List." UNRV History.
  • UNRV.com. "Roman Emperor List." UNRV History.
  • The Wikimedia Foundation, Inc. Wikipedia.

This list is intended as a guide to sources of further information. The inclusion of an item in this list does not necessarily mean that its content was used as the basis for any specific Wolfram|Alpha result.

Requests by researchers for detailed information on the sources for individual Wolfram|Alpha results can be directed here.