Friedman, L. M., DeMets, D. L., Furberg, C. D., Granger, C. B., & Reboussin, D. M. (2015). Fundamentals of Clinical Trials (5th ed. 2015.). Springer International Publishing : Imprint: Springer.

Friedman, Lawrence M., David L. DeMets, Curt D. Furberg, Christopher B. Granger, and David M. Reboussin. Fundamentals of Clinical Trials. 5th ed. 2015. Cham: Springer International Publishing : Imprint: Springer, 2015.

Friedman, Lawrence M., et al. Fundamentals of Clinical Trials. 5th ed. 2015. Springer International Publishing : Imprint: Springer, 2015.