APA (7th ed.) Citation

Burwash, I. G., Little, S. H., & Chan, K. L. (2008). Impact of blood pressure on the Doppler echocardiographic assessment of severity of aortic stenosis. Heart, 94(4), 508.

Chicago Style (17th ed.) Citation

Burwash, I. G., S. H. Little, and K. L. Chan. "Impact of Blood Pressure on the Doppler Echocardiographic Assessment of Severity of Aortic Stenosis." Heart 94, no. 4 (2008): 508.

MLA (9th ed.) Citation

Burwash, I. G., et al. "Impact of Blood Pressure on the Doppler Echocardiographic Assessment of Severity of Aortic Stenosis." Heart, vol. 94, no. 4, 2008, p. 508.