1. Anonymous, 1988. SAS/STATTM User's Guide, Release 6.03 Edition. SAS Institute Cary, NC, 1028 pp.
2. Barnard, D.R., 1989. Habitat use by cattle affects host contact with lone star ticks. J. Econ. Entomol., 82: 854?859.
3. Barnard, D.R. and Jones, B.G., 1985. Apparatus for artificial infestation of pastured beef cattle with the lone star tick (Acari: Ixodidae). J. Econ. Entomol., 78: 500?502.
4. Cochran, W.G. and Cox, G.B., 1957. Experimental Design. Wiley, New York, 611 pp.
5. Epplin, F.M. and Ervin, R.T., 1988. Evaluating the use of an alternative breed type as a pest management strategy. N. Cent. J. Agric. Econ., 10: 225?232.