• Siebert L, Simkin T (2002–present). Volcanoes of the World: an Illustrated Catalog of Holocene Volcanoes and their Eruptions. Smithsonian Institution, Global Volcanism Program Digital Information Series, GVP-3 (http://www.volcano.si.edu).

This is the officially approved citation for the Smithsonian Institution Global Volcanism Program with a modified web address that links to the current version online version of the above cited Volcanoes of the World.

The link that was previously posted in this template leads to a previous version of the website, which is no longer operating. An updated version of the officially approved Citation Guidelines was not found on the current version of the website, however, information pertaining to copyright is published at: http://www.si.edu/termsofuse/.

Previous web address that corresponds to the above citation: http://www.volcano.si.edu/world/

Previous link to Citation Guidelines: http://www.volcano.si.edu/info/about/about_votw.cfm#CitationGuidelines.