Reference

C.P. Hibler, D.M. Hammond, F.H. Caskey, A.E. Johnson, P.R. Fitzgerald (1960): The morphology and incidence of the trichomonads of swine, Tritrichomonas suis (Gruby & Delafond), Tritrichomonas rotunda, n. sp. and Trichomonas buttreyi, n. sp. – J. Protozool. – 7: 159 - 170.