Butts, C. C., Rostas, J. W., Lee, Y., Gonzalez, R. P., Brevard, S. B., Frotan, M. A., . . . Simmons, J. D. (2015). Larger ATV engine size correlates with an increased rate of traumatic brain injury. Injury, 46(4), 625-628. https://doi.org/10.1016/j.injury.2014.11.007

Butts, C. Caleb, Jack W. Rostas, Y.L Lee, Richard P. Gonzalez, Sidney B. Brevard, M. Amin Frotan, Naveed Ahmed, and Jon D. Simmons. "Larger ATV Engine Size Correlates with an Increased Rate of Traumatic Brain Injury." Injury 46, no. 4 (2015): 625-628. https://doi.org/10.1016/j.injury.2014.11.007.

Butts, C. Caleb, et al. "Larger ATV Engine Size Correlates with an Increased Rate of Traumatic Brain Injury." Injury, vol. 46, no. 4, 2015, pp. 625-628, https://doi.org/10.1016/j.injury.2014.11.007.