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The Columbia-Suicide Severity Rating Scale (C-SSRS): Initial validity and internal consistency findings from three multi-site studies with adolescents and adults.

Posner, K., Brown, G. K., Stanley, B., Brent, D. A., Yershova, K. V., Oquendo, M., . . . Mann, J. J. (2011). The Columbia-Suicide Severity Rating Scale (C-SSRS): Initial validity and internal consistency findings from three multi-site studies with adolescents and adults. American Journal of Psychiatry, 168(12): 1233–1234.