A randomised controlled trial of four weeks versus seven weeks of pulmonary rehabilitation in chronic obstructive pulmonary disease.

MLA

Green, R. H., et al. “A Randomised Controlled Trial of Four Weeks versus Seven Weeks of Pulmonary Rehabilitation in Chronic Obstructive Pulmonary Disease.” Thorax, vol. 56, no. 2, Feb. 2001, pp. 143–45. EBSCOhost, https://doi.org/10.1136/thorax.56.2.143.

APA

Green, R. H., Singh, S. J., Williams, J., & Morgan, M. D. (2001). A randomised controlled trial of four weeks versus seven weeks of pulmonary rehabilitation in chronic obstructive pulmonary disease. Thorax, 56(2), 143–145. https://doi.org/10.1136/thorax.56.2.143

Chicago

Green, R H, S J Singh, J Williams, and M D Morgan. 2001. “A Randomised Controlled Trial of Four Weeks versus Seven Weeks of Pulmonary Rehabilitation in Chronic Obstructive Pulmonary Disease.” Thorax 56 (2): 143–45. doi:10.1136/thorax.56.2.143.