Malik, D. A., and B. Singh. “DIGITAL FINGER RATIO (2D:4D) AND SALIVARY TESTOSTERONE LEVEL IN ELITE SPORTSMEN AND NON-SPORTSMEN”. International Journal of Behavioral Social and Movement Sciences, vol. 3, no. 1, Mar. 2014, pp. 01-08, https://ijobsms.org/index.php/ijobsms/article/view/186.