Παραπομπή σε μορφή APA (7η εκδ.)

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.

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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