Vishwanathan, M., M. Manninen, S. Waller, M. Sifre, E. E. Evans, and S. Yli-Piipari. “Effect of Psychological Need-Supportive Summer Camp: FIT-Dawg Girls Summer Camp”. International Journal of Physical Education, Fitness and Sports, vol. 8, no. 2, June 2019, pp. 51-63, doi:10.26524/ijpefs1927.