Cita APA (7a ed.)

Clarke, M., MacKinnon, L., & Eisinga, A. (2008). Cracking up in the search for randomised trials.

Cita Chicago Style (17a ed.)

Clarke, M., L. MacKinnon, y A. Eisinga. Cracking Up in the Search for Randomised Trials. 2008.

Cita MLA (9a ed.)

Clarke, M., et al. Cracking Up in the Search for Randomised Trials. 2008.