APA (7th ed.) Citation

Bärnighausen, T. (2017). Quasi-experimental study designs series: Paper 1 : introduction: two historical lineages. Journal of clinical epidemiology, 89, . https://doi.org/10.1016/j.jclinepi.2017.02.020

Chicago Style (17th ed.) Citation

Bärnighausen, Till. "Quasi-experimental Study Designs Series: Paper 1 : Introduction: Two Historical Lineages." Journal of Clinical Epidemiology 89 (2017). https://doi.org/10.1016/j.jclinepi.2017.02.020.

MLA (9th ed.) Citation

Bärnighausen, Till. "Quasi-experimental Study Designs Series: Paper 1 : Introduction: Two Historical Lineages." Journal of Clinical Epidemiology, vol. 89, 2017, https://doi.org/10.1016/j.jclinepi.2017.02.020.