1. Banta, W. C. (1973). Evolution of avicularia in cheilostome Bryozoa. In R. S. Boardman, A. Cheetham, & W. Oliver (Eds.), Animal colonies: Development and function through time (pp. 295–303). Dowden, Hutchinson & Ross. Inc.
2. Beklemishev, W. N. (1969). Principles of comparative anatomy of invertebrates. University of Chicago Press.
3. Boardman, R. S., & Cheetham, A. H. (1969). Skeletal growth, intracolony variation, and evolution in Bryozoa: A review. Journal of Paleontology, 43(2), 205‒233. https://www.jstor.org/stable/1302305
4. Boardman, R. S., & Cheetham, A. H. (1973). Degrees of colony dominance in stenolaemate and gymnolaemate Bryozoa. In R. S. Boardman, A. H. Cheetham, & W. A. Oliver (Eds.), Animal colonies: Development and function through time (pp. 121‒220). Dowden, Hutchinson & Ross. Inc.
5. Borg, F. (1926). Studies on recent cyclostomatous Bryozoa. Zoologiska Bidrag Från Uppsala, 10(1), 181–507.