Gerard Gormley. (2015, 23 March). Why some people have trouble telling left from right (and why it’s so important) Retrieved October 22, 2017, from https://theconversation.com/why-some-people-have-trouble-telling-left-from-right-and-why-its’s-so-important-38325
Gerard Gormley. (2008, 16 December). Right-left discrimination among medical students: questionnaire and psychometric study Retrieved October 22, 2017, from http://www.bmj.com/content/337/bmj.a2826
Mental image Retrieved October 22, 2017, from https://en.wikipedia.org/wiki/Mental_image
Mental rotation Retrieved October 22, 2017, from https://en.wikipedia.org/wiki/Mental_rotation
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