APA (7th ed.) Citation

Clarke, R., Fitzgerald, D., O'Brien, C., O'Farrell, C., Roche, G., Parker, R., & Graham, I. (1992). Hyperhomocysteinaemia: A risk factor for extracranial carotid artery atherosclerosis.

Chicago Style (17th ed.) Citation

Clarke, R., D. Fitzgerald, C. O'Brien, C. O'Farrell, G. Roche, R. Parker, and I. Graham. Hyperhomocysteinaemia: A Risk Factor for Extracranial Carotid Artery Atherosclerosis. 1992.

MLA (9th ed.) Citation

Clarke, R., et al. Hyperhomocysteinaemia: A Risk Factor for Extracranial Carotid Artery Atherosclerosis. 1992.