Martin, J. T., Hemming, K., & Girling, A. (2019). The impact of varying cluster size in cross-sectional stepped-wedge cluster randomised trials. BMC Med Res Methodol.
Citação norma ChicagoMartin, James Thomas, Karla Hemming, and Alan Girling. "The Impact of Varying Cluster Size in Cross-sectional Stepped-wedge Cluster Randomised Trials." BMC Med Res Methodol 2019.
MLA引文Martin, James Thomas, Karla Hemming, and Alan Girling. "The Impact of Varying Cluster Size in Cross-sectional Stepped-wedge Cluster Randomised Trials." BMC Med Res Methodol 2019.
警告：這些引文格式不一定是100％准確.