APA (7th ed.) Citation

Clarke, R., Woodhouse, P., Ulvik, A., Frost, C., Sherliker, P., Refsum, H., . . . Khaw, K. (1998). Variability and determinants of total homocysteine concentrations in plasma in an elderly population.

Chicago Style (17th ed.) Citation

Clarke, R., P. Woodhouse, A. Ulvik, C. Frost, P. Sherliker, H. Refsum, P. Ueland, and K. Khaw. Variability and Determinants of Total Homocysteine Concentrations in Plasma in an Elderly Population. 1998.

MLA (9th ed.) Citation

Clarke, R., et al. Variability and Determinants of Total Homocysteine Concentrations in Plasma in an Elderly Population. 1998.