The series was first commissioned on 21 March 2006, for a 2008 delivery.3
Crump, William D. (2019). Happy Holidays—Animated! A Worldwide Encyclopedia of Christmas, Hanukkah, Kwanzaa and New Year's Cartoons on Television and Film. McFarland & Co. p. 142. ISBN 9781476672939. 9781476672939 ↩
Frater, Patrick (28 July 2015). "DreamWorks Animation Launches TV Channel in Thailand". Variety. Retrieved 27 October 2015. https://variety.com/2015/tv/asia/dreamworks-animation-launches-tv-channel-in-thailand-1201551924/ ↩
"BBC Commissions 'Guess with Jess' from ER". Archived from the original on 15 May 2006. https://web.archive.org/web/20060515233457/http://www.entertainmentrights.com/news/archive/march/gwjcommission ↩