Naish, Darren (2008-12-03). "B. rex! – Tetrapod Zoology". Scienceblogs.com. Archived from the original on 2012-05-08. Retrieved 2014-06-10.
"Family Walks on All Fours, May Offer Evolution Insight, Experts Say". National Geographic. 8 March 2006. Archived from the original on 24 May 2016.
"Science May Finally Explain Why This Family Walks On All Fours". Huffingtonposts. 17 July 2014. Archived from the original on 9 May 2016.
*"Time-warp family who walk on all fours". Daily Mail. 8 March 2006. Archived from the original on 25 June 2016.
Türkmen S, Demirhan O, Hoffmann K, et al. (May 2006). "Cerebellar hypoplasia and quadrupedal locomotion in humans as a recessive trait mapping to chromosome 17p". J. Med. Genet. 43 (5): 461–4. doi:10.1136/jmg.2005.040030. PMC 2564522. PMID 16371500.
Swatman, Rachel (12 November 2015). "Video: Watch Japan's Kenichi Ito scamper to GWR Day success with fastest 100 m running on all fours". Guinness World Records. Tokyo. Archived from the original on 16 November 2015.
Mondschein, Emily R., Karen E. Adolph, and Catherine S. Tamis-LeMonda. "Gender bias in mothers' expectations about infant crawling." Journal of experimental child psychology 77.4 (2000): 304-316.
"BigDog - The Most Advanced Rough-Terrain Robot on Earth". Boston Dynamics. Archived from the original on 2011-04-23. Retrieved 2011-04-06.
"DARPA Robotics Challenge, RoboSimian (Track A)". JPL Robotics. Archived from the original on 2016-03-07. Retrieved 2016-03-07.
