Kroh, A.; Mooi, R. (2021). World Echinoidea Database.
Cyamidia Lambert & Thiery, 1914 †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=715471 on 2024-05-02
Marine Species Traits editorial board (2024). Marine Species Traits.
Cyamidia Lambert & Thiery, 1914 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=715471 on 2024-05-02