Yunker, C. E., Mahan, S. M., Waghela, S. D., McGuire, T. C., Rurangirwa, F. R., Barbet, A. F., & Wassink, L. A. (1993). Detection of Cowdria ruminantium by means of a DNA probe, pCS20 in infected bont ticks, Amblyomma hebraeum, the major vector of heartwater in southern Africa. Cambridge University Press.

Yunker, C. E., S. M. Mahan, S. D. Waghela, T. C. McGuire, F. R. Rurangirwa, A. F. Barbet, e L. A. Wassink. Detection of Cowdria Ruminantium By Means of a DNA Probe, PCS20 in Infected Bont Ticks, Amblyomma Hebraeum, the Major Vector of Heartwater in Southern Africa. Cambridge University Press, 1993.

Yunker, C. E., et al. Detection of Cowdria Ruminantium By Means of a DNA Probe, PCS20 in Infected Bont Ticks, Amblyomma Hebraeum, the Major Vector of Heartwater in Southern Africa. Cambridge University Press, 1993.