Pettitt, R. W., Clark, I. E., Ebner, S. M., Sedgeman, D. T. & Murray, S. R. (2013). Gas exchange threshold and VO2max testing for athletes: An update. The Journal of Strength and Conditioning Research, 27 (2), 549-555. doi: 10.1519/JSC.0b013e31825770d7
APA (7th ed.) CitationPettitt, R. W., Clark, I. E., Ebner, S. M., Sedgeman, D. T., & Murray, S. R. (2013). Gas exchange threshold and VO2max testing for athletes: An update. The Journal of Strength and Conditioning Research, 27(2), 549-555.
Chicago Style (17th ed.) CitationPettitt, R. W., I. E. Clark, S. M. Ebner, D. T. Sedgeman, and S. R. Murray. "Gas Exchange Threshold and VO2max Testing for Athletes: An Update." The Journal of Strength and Conditioning Research 27, no. 2 (2013): 549-555.
MLA (9th ed.) CitationPettitt, R. W., et al. "Gas Exchange Threshold and VO2max Testing for Athletes: An Update." The Journal of Strength and Conditioning Research, vol. 27, no. 2, 2013, pp. 549-555.