Friedman, L. M., Furberg, C. D., DeMets, D. L., Reboussin, D. M., & Granger, C. B. (2015). Fundamentals of clinical trials (Fifth edition.). Cham: Springer.

Friedman, Lawrence M., Curt D. Furberg, David L. DeMets, David M. Reboussin, and Christopher B. Granger. Fundamentals of Clinical Trials. Fifth edition. Cham: Springer, 2015.

Friedman, Lawrence M., et al. Fundamentals of Clinical Trials. Fifth edition. Cham: Springer, 2015.