Leininger, L., M. Coles, and J. Gilbert. “Comparing Enjoyment and Perceived Exertion Between Equivalent Bouts of Physically Interactive Video Gaming and Treadmill Walking”. The Health & Fitness Journal of Canada, vol. 3, no. 1, Aug. 2010, pp. 12-18, doi:10.14288/hfjc.v3i1.49.