Robba, E. (2013). Tertiary and Quaternary fossil pyramidelloidean gastropods of Indonesia. <em>Scripta Geologica.</em> 144: 1-191. [April 2013]. page(s): 15 [details] Available for editors
MolluscaBase eds. (2025). MolluscaBase. Megastomia gradata Robba, 2013 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1625698 on 2025-05-22
Marine Species Traits editorial board (2025). Marine Species Traits. Megastomia gradata Robba, 2013 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1625698 on 2025-05-22
original descriptionRobba, E. (2013). Tertiary and Quaternary fossil pyramidelloidean gastropods of Indonesia. <em>Scripta Geologica.</em> 144: 1-191. [April 2013]. page(s): 15 [details] Available for editors