APA (7th ed.) Citation

O’Connor, D. B., Ferguson, E., Green, J. A., O'Carroll, R. E., & O'Connor, R. C. (2015). Cortisol levels and suicidal behavior: A meta-analysis. Elsevier.

Chicago Style (17th ed.) Citation

O’Connor, Daryl B., Eamonn Ferguson, Jessica A. Green, Ronan E. O'Carroll, and Rory C. O'Connor. Cortisol Levels and Suicidal Behavior: A Meta-analysis. Elsevier, 2015.

MLA (9th ed.) Citation

O’Connor, Daryl B., et al. Cortisol Levels and Suicidal Behavior: A Meta-analysis. Elsevier, 2015.