Prastyo, D. B., M. Deliana, Y. Dimyati, and K. S. Arto. “The Effect of Psychological Stress on Salivary Testosterone in Puberty Children”. Open Access Macedonian Journal of Medical Sciences, vol. 6, no. 9, Sept. 2018, pp. 1611-6, doi:10.3889/oamjms.2018.321.