World Register of Marine Species (WoRMS)
Robulus cushmani Galloway & Wissler, 1927
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Robulus cushmani Galloway & Wissler, 1927. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=736673 on 2026-08-01
Galloway, J. J.; Wissler, S. G. (1927). Pleistocene Foraminifera from the Lomita Quarry Palos Verdes Hills, California. Journal of Paleontology. 1: 35-87.