Short Course on Lophophorates, Cincinnati, Ohio, Paleontological Society, Cincinnati Museum of Natural History, University of Cincinnati. Dept. of Geology, Short Course on Lophophorates, Boardman, R. S., & Dutro, J. T. (1981). Lophophorates--notes for a short course. University of Tennessee.
Chicago-viite (17. p.)Short Course on Lophophorates, Cincinnati, Ohio, Paleontological Society, Cincinnati Museum of Natural History, University of Cincinnati. Dept. of Geology, Short Course on Lophophorates, Richard S. Boardman, ja J. Thomas Dutro. Lophophorates--notes for a Short Course. Knoxville: University of Tennessee, 1981.
MLA-viite (8. p.)Short Course on Lophophorates, Cincinnati, Ohio, et al. Lophophorates--notes for a Short Course. University of Tennessee, 1981.