Bibliografi Helium

  • Bureau of Mines (1967). Minerals yearbook mineral fuels Year 1965, Volume II (1967). U. S. Government Printing Office. 
  • Committee on the Impact of Selling the Federal Helium Reserve, Commission on Physical Sciences, Mathematics, and Applications, Commission on Engineering and Technical Systems, National Research Council (2000). The Impact of Selling the Federal Helium Reserve. The National Academies Press. ISBN 0-309-07038-4. Dicapai 2010-04-02. Selenggaraan CS1: Pelbagai nama: senarai pengarang (link)
  • Emsley, John (1998). The Elements (edisi 3rd). New York: Oxford University Press. ISBN 978-0-19-855818-7
  • "Mineral Information for Helium" (PDF). United States Geological Survey (usgs.gov). Dicapai 2007-01-05. 
  • Vercheval, J. (2003). "The thermosphere: a part of the heterosphere". Belgian Institute for Space Aeronomy. Diarkibkan daripada asal pada 2005-01-01. Dicapai 2008-07-12. 

Rujukan

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