Roffman, C. E., Buchanan, J., & Allison, G. T. (2016). Charlson Comorbidities Index. Elsevier.
Chicago Style (17th ed.) CitationRoffman, Caroline E., John Buchanan, and Garry T. Allison. Charlson Comorbidities Index. Elsevier, 2016.
MLA (8th ed.) CitationRoffman, Caroline E., et al. Charlson Comorbidities Index. Elsevier, 2016.
Warning: These citations may not always be 100% accurate.