APA (7th ed.) Citation

Schulz, K. F., Grimes, D. A., & Horton, R. C. (2019). Essential concepts in clinical research: Randomised controlled trials and observational epidemiology (Second edition.). Elsevier.

Chicago Style (17th ed.) Citation

Schulz, Kenneth F., David A. Grimes, and Richard C. Horton. Essential Concepts in Clinical Research: Randomised Controlled Trials and Observational Epidemiology. Second edition. Edinburgh: Elsevier, 2019.

MLA (9th ed.) Citation

Schulz, Kenneth F., et al. Essential Concepts in Clinical Research: Randomised Controlled Trials and Observational Epidemiology. Second edition. Elsevier, 2019.