Walsh, K. M., Cooper, M. A., Holle, R., Rakov, V. A., Roeder, W. P., & Ryan, M. (2013). National Athletic Trainers' Association position statement: Lightning safety for athletics and recreation. Journal of athletic training, 48(2), S. 258-270. doi:10.4085/1062-6050-48.2.25

Walsh, Katie M., Mary Ann Cooper, Ron Holle, Vladimir A. Rakov, William P. Roeder, and Michael Ryan. "National Athletic Trainers' Association Position Statement: Lightning Safety for Athletics and Recreation." Journal of Athletic Training 48, no. 2 (2013): S. 258-270.

Walsh, Katie M., et al. "National Athletic Trainers' Association Position Statement: Lightning Safety for Athletics and Recreation." Journal of Athletic Training 48.2 (2013): S. 258-270.