(of)Koperberg, E. J., 1931. Jungtertiäre and Quartäre Mollusken von Timor. Amsterdam: University of Amsterdam, pp. xii + 165, plates I-III (Ph.D. thesis) page(s): 9 [details]
MolluscaBase eds. (2024). MolluscaBase. Sphenia marci Koperberg, 1931 †. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1665769 on 2024-09-28
Marine Species Traits editorial board (2024). Marine Species Traits. Sphenia marci Koperberg, 1931 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1665769 on 2024-09-28
original description(of)Koperberg, E. J., 1931. Jungtertiäre and Quartäre Mollusken von Timor. Amsterdam: University of Amsterdam, pp. xii + 165, plates I-III (Ph.D. thesis) page(s): 9 [details]