World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Calcitornella collisformis Zheng, 1991&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1334908 on 2026-08-01
Zheng, H. (1991). 华北地台区东部晚古生代太原组钙质无孔壳有孔虫 - Some porcelaneous Foraminifera from the Late Paleozoic Taiyuan Formation of North China. 微体古生物学报 - Acta Micropalaeontologica Sinica. 8(3): 281-288.