1. BBC. (2020, August 6). TikTok twins charged over bank robbery ‘prank’. BBC News. https://www.bbc.com/news/technology-53681018
2. Larbi, M. (2019, April 17). Twin-credible: twins born 97 days apart in different years hailed a ‘Medical sensation’. The Sun. https://www.thesun.co.uk/fabulous/8882735/twins-born-97-days-apart/.
3. Majmudar, A. (2020, August 10). Identical twins with two very different destinies. New York Times. https://www.nytimes.com/2020/08/10/parenting/infant-congenital-heart-defect.html?referringSource=articleShare.
4. Introduction to a Festschrift for John Loehlin
5. Morton, C. (2015, August 30). Legend: An in-depth look into the violent history of Ronnie and Reggie, the Kray twins. Independent. https://www.independent.co.uk/arts-entertainment/films/features/legend-depth-look-violent-history-ronnie-and-reggie-kray-twins-10478174.html.