Gierasch, Peter J.; Nicholson, Philip D. (2004). "Jupiter". World Book @ NASA. Archived from the original on January 5, 2005. Retrieved August 10, 2006.
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Gierasch, Peter J.; Nicholson, Philip D. (2004). "Jupiter". World Book @ NASA. Archived from the original on January 5, 2005. Retrieved August 10, 2006.