Labuscagne, Annemarie, Spencer, B. Tom, Picard, Jackie A., and Williams, Mark C. (2012) An investigation to determine the cause of haemorrhagic enteritis in commercial pig grower units in the northern parts of South Africa. Journal of the South African Veterinary Association, 83 (1). 19.

van der Merwe, Liesel L., Kirberger, Robert M., Clift, Sarah, Williams, Mark, Keller, Ninette, and Naidoo, Vinny (2008) Spirocerca lupi infection in the dog: a review. The Veterinary Journal, 176 (3). pp. 294-309.

Williams, M.J., Hamlin, G.P., Nimmo, A.J., and Crane, L.H. (2003) Circular versus longitudinal myometrial contractile response to selective tachykinin receptor agonists in rat. Reproduction, Fertility and Development, 15 (6). pp. 311-316.

Crane, Linda H., Williams, Melanie J., Nimmo, Alan J., and Hamlin, Gary P. (2002) Estrogen-dependent regulation of neurokinin 3 receptor-mediated uterine contractility in the rat. Biology of Reproduction, 67 (5). pp. 1480-1487.