Michel, P., Wilson, J. B., Martin, S. W., Clarke, R. C., McEwen, S. A., & Gyles, C. L. (1999). Temporal and geographical distributions of reported cases of Escherichia coli O157: H7 infection in Ontario. Cambridge University Press.

Michel, P., J. B. Wilson, S. W. Martin, R. C. Clarke, S. A. McEwen, ja C. L. Gyles. Temporal and Geographical Distributions of Reported Cases of Escherichia Coli O157: H7 Infection in Ontario. Cambridge University Press, 1999.

Michel, P., et al. Temporal and Geographical Distributions of Reported Cases of Escherichia Coli O157: H7 Infection in Ontario. Cambridge University Press, 1999.