APA (7th ed.) Citation

Algra, A., & Rothwell, P. (2012). Effects of regular aspirin on long-term cancer incidence and metastasis: A systematic comparison of evidence from observational studies versus randomised trials.

Chicago Style (17th ed.) Citation

Algra, A., and P. Rothwell. Effects of Regular Aspirin on Long-term Cancer Incidence and Metastasis: A Systematic Comparison of Evidence from Observational Studies Versus Randomised Trials. 2012.

MLA (9th ed.) Citation

Algra, A., and P. Rothwell. Effects of Regular Aspirin on Long-term Cancer Incidence and Metastasis: A Systematic Comparison of Evidence from Observational Studies Versus Randomised Trials. 2012.