A manual of the sub-kingdom Protozoa. With a general introduction on the principles of zoology - Greene, J. Reay, 1836 -1903 (Longmans, Green, Longman, Roberts, & Green, 1868)

A manual of zoology - Nicholson, Henry Alleyne, 1844 -1899 (Blackwood, 1870)

A manual of zoology - Kingsley, J. S. (John Sterling), 1854 -1929 (H. Holt, 1912)

A manual of zoology - Kingsley, J. S. (John Sterling), 1854 -1929 (H. Holt and Company, 1902)

A manual of zoology - Parker, T. Jeffery (Thomas Jeffery), 1850 -1897 (The Macmillan Company, 1900)