da Costa, J. N., Arcuri, J. F., Gonçalves, I. L., Davi, S. F., Pessoa, B. V., Jamami, M., & Di Lorenzo, V. A. (2014). Reproducibility of cadence-free 6-minute step test in subjects with COPD. Respiratory care, 59(4), 538. https://doi.org/10.4187/respcare.02743
Chicago Style (17th ed.) Citationda Costa, Joyce Nf, Juliano F. Arcuri, Ivana L. Gonçalves, Simone F. Davi, Bruna V. Pessoa, Mauricio Jamami, and Valéria Ap Di Lorenzo. "Reproducibility of Cadence-free 6-minute Step Test in Subjects with COPD." Respiratory Care 59, no. 4 (2014): 538. https://doi.org/10.4187/respcare.02743.
MLA (9th ed.) Citationda Costa, Joyce Nf, et al. "Reproducibility of Cadence-free 6-minute Step Test in Subjects with COPD." Respiratory Care, vol. 59, no. 4, 2014, p. 538, https://doi.org/10.4187/respcare.02743.