Stevens, J. & Last, P.R. (1998). Paxton, J.R. & Eschmeyer, W.N. (Ed.). Encyclopedia of Fishes. San Diego: Academic Press. s. 69. ISBN0-12-547665-5.KB1 bakım: Birden fazla ad: yazar listesi (link)
Tozer, H., & D. D. Dagit (2004). Husbandry of Spotted Ratfish, Hydrolagus colliei.[ölü/kırık bağlantı], Chapter 33 in: Smith, M., D. Warmolts, D. Thoney, & R. Hueter (editors). Elasmobranch Husbandry Manual: Captive Care of Sharks, Rays, and their Relatives. Ohio Biological Survey, Inc.
