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): 98 [details]
MolluscaBase eds. (2025). MolluscaBase. Sipho jonkeri Koperberg, 1931 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=888040 on 2025-05-18
Marine Species Traits editorial board (2025). Marine Species Traits. Sipho jonkeri Koperberg, 1931 †. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=888040 on 2025-05-18
original descriptionKoperberg, E. J., 1931. Jungtertiäre and Quartäre Mollusken von Timor. Amsterdam: University of Amsterdam, pp. xii + 165, plates I-III (Ph.D. thesis) page(s): 98 [details]