Reference

Bronislaw Honigberg, William Balamuth, E.C. Bovee, John Ozro Corliss, M. Gojdics, Richard P. Hall, Richard Roksabro Kudo, N.D. Levine, A.R. Loeblich, J. Weiser, et al. (1964): A revised classification of the phylum Protozoa – J. Protozool. – 11: 7 - 20.