1 2 Margulis, Lynn; Schwartz, Karlene (1998), Five Kingdoms, An Illustrated Guide to the Phyla of Life on Earth , W.H. Freeman and Company, ISBN0-7167-3027-8
1 2 3 4 5 6 7 8 Shultz, J.W. (2001), “Chelicerata (Arachnids, Including Spiders, Mites and Scorpions)”, Encyclopedia of Life Sciences, John Wiley & Sons, Ltd., doi:10.1038/npg.els.0001605
↑ Poschmann, M., and Dunlop, J.A. (2006), “A New Sea Spider (Arthropoda: Pycnogonida) with a Flagelliform Telson from the Lower Devonian Hunsrück Slate, Germany”, Palaeontology, 49 (5): 983–989, doi:10.1111/j.1475-4983.2006.00583.xQuản lý CS1: nhiều tên: danh sách tác giả (liên kết)
