APA-viite

deFilippi, C. R., Christenson, R. H., Kop, W. J., Gottdiener, J. S., Zhan, M., & Seliger, S. L. (2011). Left ventricular ejection fraction assessment in older adults: An adjunct to natriuretic peptide testing to identify risk of new onset heart failure and cardiovascular death?

Chicago-tyylinen lähdeviittaus

deFilippi, Christopher R., Robert H. Christenson, Willem J. Kop, John S. Gottdiener, Min Zhan, ja Stephen L. Seliger. Left Ventricular Ejection Fraction Assessment in Older Adults: An Adjunct to Natriuretic Peptide Testing to Identify Risk of New Onset Heart Failure and Cardiovascular Death? 2011.

MLA-viite

deFilippi, Christopher R., et al. Left Ventricular Ejection Fraction Assessment in Older Adults: An Adjunct to Natriuretic Peptide Testing to Identify Risk of New Onset Heart Failure and Cardiovascular Death? 2011.

Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.