Cowden, J. M., Lynch, D., Joseph, C. A., O'Mahony, M., Mawer, S. L., Rowe, B., & Bartlett, C. L. (1989). Case-control study of infections with Salmonella enteritidis phage type 4 in England.

Cowden, J. M., D. Lynch, C. A. Joseph, M. O'Mahony, S. L. Mawer, B. Rowe, ja C. L. Bartlett. Case-control Study of Infections With Salmonella Enteritidis Phage Type 4 in England. 1989.

Cowden, J. M., et al. Case-control Study of Infections With Salmonella Enteritidis Phage Type 4 in England. 1989.