Hoyle, D. V., Shaw, D. J., Knight, H. I., Davison, H. C., Pearce, M. C., Low, J. C., . . . Woolhouse, M. E. J. (2004). Age-Related Decline in Carriage of Ampicillin-Resistant Escherichia coli in Young Calves. American Society for Microbiology.

Hoyle, Deborah V., Darren J. Shaw, Hazel I. Knight, Helen C. Davison, Michael C. Pearce, J. Chris Low, George J. Gunn, και Mark E. J. Woolhouse. Age-Related Decline in Carriage of Ampicillin-Resistant Escherichia Coli in Young Calves. American Society for Microbiology, 2004.

Hoyle, Deborah V., et al. Age-Related Decline in Carriage of Ampicillin-Resistant Escherichia Coli in Young Calves. American Society for Microbiology, 2004.