^Cronin، Brian (أغسطس 26, 2011). "Comic Book Legends Revealed #329". موارد الكتب المصورة. مؤرشف من الأصل في أغسطس 21, 2014. Since I can't find any other published reference to it that predates Bridwell's, I think it is fair to give him the credit.
^Schwirian، John (فبراير 2010). "Purple Prose: The Perplexing Popularity of the Wonder Twins". Back Issue!. Raleigh, North Carolina: TwoMorrows Publishing ع. 38: 62.