1. Alden, K. J. 1995. Helminths of the opossum, Didelphis virginiana., in southern Illinois with a compilation of all helminths reported from this host in North America Journal of the Helminthological Society of Washington 62: 197–208
2. Barbosa, J. V. 1991. Infecção natural e formas evolutivas de Echinostoma revolutum. (Froelich, 1802) Biomphalaria tenagophila (Orbigny, 1835) e Rattus norvergicus. Susceptibilidade de Mus musculus ao parasitismoUniversidade Federal Rural do Rio de Janeiro, Tese de Mestrado, 58 .
3. Borgsteed, F. H. M., Okulewicz, A., and Okulewicz, J. 2000. A study of the helminth fauna of birds belonging to the Passeriformes in the Netherlands. Acta Parasitologica 45: 14–21.
4. Borgsteed, F. H. M., Okulewicz, A., Zoun, P. E. F., and Okulewicz, J. 2003. The helminth fauna of birds of prey (Accipitriformes, Falconiformes, and Strigiformes) in the Netherlands. Acta Parasitologica 48: 200–207.
5. Brasil, M. D., and Amato, S. B. 1992. Faunistic analysis of the helminths of sparrows (Passer domesticus. L, 1758) captured in Campo Grande, Rio de Janeiro, R.J. Memórias do Instituto Oswaldo Cruz 87: 43–48.