APA-viite

Collins, G. S., & Altman, D. G. (2010). An independent and external validation of QRISK2 cardiovascular disease risk score: A prospective open cohort study. BMJ Publishing Group Ltd.

Chicago-tyylinen lähdeviittaus

Collins, Gary S., ja Douglas G. Altman. An Independent and External Validation of QRISK2 Cardiovascular Disease Risk Score: A Prospective Open Cohort Study. BMJ Publishing Group Ltd, 2010.

MLA-viite

Collins, Gary S., ja Douglas G. Altman. An Independent and External Validation of QRISK2 Cardiovascular Disease Risk Score: A Prospective Open Cohort Study. BMJ Publishing Group Ltd, 2010.

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