APA (7th ed.) Citation

Marquardt, L., Kuker, W., Chandratheva, A., Geraghty, O., & Rothwell, P. (2009). Incidence and prognosis of > or = 50% symptomatic vertebral or basilar artery stenosis: Prospective population-based study.

Chicago Style (17th ed.) Citation

Marquardt, L., W. Kuker, A. Chandratheva, O. Geraghty, and P. Rothwell. Incidence and Prognosis of > or = 50% Symptomatic Vertebral or Basilar Artery Stenosis: Prospective Population-based Study. 2009.

MLA (9th ed.) Citation

Marquardt, L., et al. Incidence and Prognosis of > or = 50% Symptomatic Vertebral or Basilar Artery Stenosis: Prospective Population-based Study. 2009.