Citação norma APA

Hemming, K., & Girling, A. (2013). Stepped-wedge cluster randomised controlled trials: Some variations on the common design. BioMed Central.

Citação norma Chicago

Hemming, Karla, and Alan Girling. Stepped-wedge Cluster Randomised Controlled Trials: Some Variations On the Common Design. BioMed Central, 2013.

Citação norma MLA

Hemming, Karla, and Alan Girling. Stepped-wedge Cluster Randomised Controlled Trials: Some Variations On the Common Design. BioMed Central, 2013.

Nota: a formatação da citação pode não corresponder 100% ao definido pela respectiva norma.