Pettitt, R. W., Niemeyer, J. D., Sexton, P. J., Lipetzky, A., & Murray, S. R. (2013). Do the noncaffeine ingredients of energy drinks affect metabolic responses to heavy exercise? Journal of strength and conditioning research, 27(7), S. 1994-1999. doi:10.1519/JSC.0b013e3182736e31

Pettitt, Robert W., JoLynne D. Niemeyer, Patrick J. Sexton, Amanda Lipetzky, and Steven R. Murray. "Do the Noncaffeine Ingredients of Energy Drinks Affect Metabolic Responses to Heavy Exercise?" Journal of Strength and Conditioning Research 27, no. 7 (2013): S. 1994-1999.

Pettitt, Robert W., et al. "Do the Noncaffeine Ingredients of Energy Drinks Affect Metabolic Responses to Heavy Exercise?" Journal of Strength and Conditioning Research 27.7 (2013): S. 1994-1999.