Allen, Sanford (January 29, 2010). "Made in SA: Hyperbubble". Missions Unknown. Archived from the original on February 22, 2010. Retrieved February 25, 2011.
Allen, Sanford (January 29, 2010). "Made in SA: Hyperbubble". Missions Unknown. Archived from the original on February 22, 2010. Retrieved February 25, 2011.