1. Beattie Geoffrey, 2004. Visible Thought - The New Psychology of Body Language: Pages 98 – 101
2. Navarro Joe, 2009. What The Feet And Legs Say About Us
3. Park Y. and Bae Y. 2014. Comparison of Postures According to Sitting Time with the Leg Crossed
4. Celie Morin and Jessica Maxfield.University of New Hampshire.Gender Differences in Sitting Positions of College Students and an Explanation of these Differences