Cita APA

Hayes, R. J., & Moulton, L. H. (2009). Cluster randomised trials. CRC Press.

Chicago Edition Citation

Hayes, Richard J., i Lawrence H. Moulton. Cluster Randomised Trials. Boca Raton: CRC Press, 2009.

Cita MLA

Hayes, Richard J., i Lawrence H. Moulton. Cluster Randomised Trials. CRC Press, 2009.