Frost, F. J., Calderon, R. L., Muller, T. B., Curry, M., Rodman, J. S., Moss, D. M., & de la Cruz, A. A. (1998). A two-year follow-up survey of antibody to Cryptosporidium in Jackson County, Oregon following an outbreak of waterborne disease. Cambridge University Press.

Frost, F. J., R. L. Calderon, T. B. Muller, M. Curry, J. S. Rodman, D. M. Moss, i A. A. de la Cruz. A Two-year Follow-up Survey of Antibody to Cryptosporidium in Jackson County, Oregon Following an Outbreak of Waterborne Disease. Cambridge University Press, 1998.

Frost, F. J., et al. A Two-year Follow-up Survey of Antibody to Cryptosporidium in Jackson County, Oregon Following an Outbreak of Waterborne Disease. Cambridge University Press, 1998.