Smith, D.G. 2001. Chapter 11. Entoprocta (Banded moss animals). (In). D.G. Smith. Pennak's Freshwater Invertebrates of the United States. John Wiley, New York.

Smith, D.G. 2001. Chapter 12. Ectoprocta (Moss animals). (In). D.G. Smith. Pennak's Freshwater Invertebrates of the United States. John Wiley, New York.

Wood, T.S. 2016. Chapter 13. Phylum Ectoprocta (Bryozoa). (In) J.H. Thorp and D.C. Rogers. Keys to Nearctic Fauna. Thorp and Covich's Freshwater Invertebrates - Volumn II. Elsevier. Amsterdam.

Wood, T.S. 2016. Chapter 14. Phylum Entoprocta. (In) J.H. Thorp and D.C. Rogers. Keys to Nearctic Fauna. Thorp and Covich's Freshwater Invertebrates - Volumn II. Elsevier. Amsterdam.

References
Moss Animals (Ectoprtoprocta & Entoprocta) of Ohio