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thehugoawards.org
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"1985 Hugo Awards". The Hugo Awards. World Science Fiction Society. July 26, 2007. Retrieved April 19, 2010.
"1989 Hugo Awards". The Hugo Awards. World Science Fiction Society. July 26, 2007. Retrieved April 19, 2010.
"2000 Hugo Awards". The Hugo Awards. World Science Fiction Society. July 26, 2007. Retrieved April 19, 2010.
"2001 Hugo Awards". The Hugo Awards. World Science Fiction Society. July 26, 2007. Retrieved April 19, 2010.
"2008 Hugo Awards". The Hugo Awards. World Science Fiction Society. August 13, 2008. Retrieved April 19, 2010.
"2016 Hugo Awards". The Hugo Awards. World Science Fiction Society. December 29, 2015. Retrieved January 16, 2017.
"2018 Hugo Awards". The Hugo Awards. World Science Fiction Society. March 15, 2018. Retrieved June 26, 2021.