World Register of Marine Species (WoRMS)
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2026). World Foraminifera Database. Nonion barleeanum (Williamson, 1858). Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=113583 on 2026-08-30
Williamson, W.C. (1858). On the recent Foraminifera of Great Britain. The Ray Society, London. 1-107.