APA (7th ed.) Citation

MC, P., PJ, P., T, W., P, C., & M, D. (2015). How to study improvement interventions: A brief overview of possible study types. Postgraduate medical journal, 91(1076), 343. https://doi.org/10.1136/postgradmedj-2014-003620rep

Chicago Style (17th ed.) Citation

MC, Portela, Pronovost PJ, Woodcock T, Carter P, and Dixon-Woods M. "How to Study Improvement Interventions: A Brief Overview of Possible Study Types." Postgraduate Medical Journal 91, no. 1076 (2015): 343. https://doi.org/10.1136/postgradmedj-2014-003620rep.

MLA (9th ed.) Citation

MC, Portela, et al. "How to Study Improvement Interventions: A Brief Overview of Possible Study Types." Postgraduate Medical Journal, vol. 91, no. 1076, 2015, p. 343, https://doi.org/10.1136/postgradmedj-2014-003620rep.