World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Guembelina subglabra (Cushman, 1926)&nbsp;&#8224;. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=1296139 on 2026-08-30
Cushman, J. A. (1926). The foraminifera of the Velasco Shale of the Tampico Embayment. Bulletin of the American Association of Petroleum Geologists. 10: 581-612.