APA
Chow S., . (2009). Sample Size Calculations in Clinical Research. : Chapman & Hall/CRC.
Chicago
Chow Shein-Chung, . 2009. Sample Size Calculations in Clinical Research. : Chapman & Hall/CRC.
Harvard
Chow S., . (2009). Sample Size Calculations in Clinical Research. : Chapman & Hall/CRC.
MLA
Chow Shein-Chung, . Sample Size Calculations in Clinical Research. : Chapman & Hall/CRC. 2009.