Nieman D, Weidner T, Dick E. Exercise and the Common Cold. American College of Sports Medicine. https://www.acsm.org/docs/current-comments/exerciseandcommoncold.pdf. Accessed January 2016
Pyne D, Fricker P. How to manage the return to training after illness. Australian Sports Commission. http://www.ausport.gov.au/sportscoachmag/program_management2/how_to_manage_the_return_to_training_after_illness. Accessed January 2016.