Expedition to the Barrier Peaks (English Wikipedia)

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Canavan, William (May 5, 2006). "Return Expedition to the Barrier Peaks". Wizards of the Coast. Archived from the original on March 4, 2016. Retrieved February 3, 2009.
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Ryan, Michael (June 7, 2002). "Book of Challenges Spotlight". Wizards of the Coast. Archived from the original on March 4, 2016. Retrieved February 5, 2009.

wizards.com

"Dungeons & Dragons FAQ". Wizards of the Coast. 2003. Archived from the original on August 18, 2000. Retrieved February 9, 2009.
"The S-Series D&D Alumni". Wizards of the Coast. November 15, 2007. Archived from the original on November 17, 2007. Retrieved July 22, 2009.
"Dungeon Survival Guide". Wizards of the Coast. October 19, 2007. Archived from the original on October 21, 2007. Retrieved July 22, 2009.
Canavan, William (October 20, 2006). "Future Tech Meets Fantasy". Wizards of the Coast. Archived from the original on October 12, 2007. Retrieved February 14, 2009.
"Dungeons of Dread". Wizards of the Coast. Archived from the original on December 30, 2012. Retrieved June 22, 2013.
"Dungeons of Dread: Barrier Peaks". Wizards of the Coast. Archived from the original on March 26, 2013. Retrieved June 22, 2013.
"Dungeon Master's Screen". Wizards of the Coast. Archived from the original on December 14, 2007. Retrieved August 1, 2009.
Broadhurst, Creighton. "April Fools: Introducing Living GreyForce". Wizards of the Coast. Archived from the original on April 4, 2003. Retrieved February 5, 2009.

archive.wizards.com

Baur, Wolfgang (September 8, 2006). "Copper Bits and Gleaming Hoards". Wizards of the Coast. Archived from the original on August 8, 2015. Retrieved February 14, 2009.
Canavan, William (May 5, 2006). "Return Expedition to the Barrier Peaks". Wizards of the Coast. Archived from the original on March 4, 2016. Retrieved February 3, 2009.
"Ask Wizards: 05/05/2006". Wizards of the Coast. Archived from the original on March 4, 2016. Retrieved February 5, 2009.
Ryan, Michael (June 7, 2002). "Book of Challenges Spotlight". Wizards of the Coast. Archived from the original on March 4, 2016. Retrieved February 5, 2009.