(of)Fornasini, C. (1900). Le polimorfine e le uvigerine fossili d'Italia. <em>Bollettino della Società geologica italiana.</em> 19(1): 132-172., available online athttps://www.biodiversitylibrary.org/page/51391596 page(s): p. 136 [details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Sigmomorphina terquemiana (Fornasini, 1900). Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=710944 on 2025-05-18
Marine Species Traits editorial board (2025). Marine Species Traits. Sigmomorphina terquemiana (Fornasini, 1900). Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=710944 on 2025-05-18
original description(of)Fornasini, C. (1900). Le polimorfine e le uvigerine fossili d'Italia. <em>Bollettino della Società geologica italiana.</em> 19(1): 132-172., available online athttps://www.biodiversitylibrary.org/page/51391596 page(s): p. 136 [details]