Template:Williams et al., 1996
- Williams, A., Carlson, S.J., Brunton, C.H.C., Holmer, L.E. & Popov, L. 1996. A supra-ordinal classification of the Brachiopoda. Philosophical Transactions of the Royal Society B: Biological Sciences 351: 1171–1193. DOI: 10.1098/rstb.1996.0101