APA
Schulz K. F., . (2019). Essential Concepts In Clinical Research: Randomised Controlled Trials And Observational Epidemiology. : Elsevier.
Chicago
Schulz Kenneth F, . 2019. Essential Concepts In Clinical Research: Randomised Controlled Trials And Observational Epidemiology. : Elsevier.
Harvard
Schulz K. F., . (2019). Essential Concepts In Clinical Research: Randomised Controlled Trials And Observational Epidemiology. : Elsevier.
MLA
Schulz Kenneth F, . Essential Concepts In Clinical Research: Randomised Controlled Trials And Observational Epidemiology. : Elsevier. 2019.