Sheppard, S., Sheppard, S. K., McCarthy, N. D., Falush, D., & Maiden, M. C. J. (2008). Convergence of Campylobacter Species: Implications for Bacterial Evolution. Science, 320(5873), pp. 237-239. doi:10.1126/science.1155532

Sheppard, Samuel, S. K. Sheppard, N. D. McCarthy, D. Falush, and M. C. J. Maiden. "Convergence of Campylobacter Species: Implications for Bacterial Evolution." Science 320, no. 5873 (2008): 237-239.

Sheppard, Samuel, et al. "Convergence of Campylobacter Species: Implications for Bacterial Evolution." Science 320.5873 (2008): 237-239.