"2008 Hugo Nomination List". Denvention 3: The 66th World Science Fiction Convention. World Science Fiction Society. 2008. Archived from the original on 24 March 2008. Retrieved 21 March 2008.
"2008 Hugo Nomination List". Denvention 3: The 66th World Science Fiction Convention. World Science Fiction Society. 2008. Archived from the original on 24 March 2008. Retrieved 21 March 2008.