original description(ofRingicula (Ringiculina) pilula Habe, 1950)Habe T. (1950). Ringiculidae and Retusidae in Japan: Illustrated catalog of Japanese shells. 2: 7-16, pl. 2. page(s): 10, pl. 2, fig. 11. [details]
basis of recordRosenberg, G. 1992. <i>Encyclopedia of Seashells</i>. Dorset: New York. 224 pp. page(s): 112 [details]
additional sourceLiu, J.Y. [Ruiyu] (ed.). (2008). Checklist of marine biota of China seas. <em>China Science Press.</em> 1267 pp. (look up in IMIS) [details] Available for editors [request]