Chow, S., Shao, J., & Wang, H. (2008). Sample size calculations in clinical research (2nd ed.). Chapman & Hall/CRC.
Cita Chicago (17th ed.)Chow, Shein-Chung, Jun Shao, i Hansheng Wang. Sample Size Calculations in Clinical Research. 2nd ed. Boca Raton: Chapman & Hall/CRC, 2008.
Cita MLA (9th ed.)Chow, Shein-Chung, et al. Sample Size Calculations in Clinical Research. 2nd ed. Chapman & Hall/CRC, 2008.
Atenció: Aquestes cites poden no estar 100% correctes.