APA (7th ed.) Citation

Machin, D., & Campbell, M. J. (2005). Design of studies for medical research. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Machin, David, and Michael J. Campbell. Design of Studies for Medical Research. Chichester, England ; Hoboken, NJ: John Wiley & Sons, 2005.

MLA (9th ed.) Citation

Machin, David, and Michael J. Campbell. Design of Studies for Medical Research. John Wiley & Sons, 2005.