Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2021). Ascidiacea World Database.
Protopolyclinum Millar, 1960. Accessed through: Land J. van der (ed). (2008) UNESCO-IOC Register of Marine Organisms (URMO) at: https://marinespecies.org/urmo/aphia.php?p=taxdetails&id=249604 on 2025-02-24
Land J. van der (ed). (2008). UNESCO-IOC Register of Marine Organisms (URMO).
Protopolyclinum Millar, 1960. Accessed at: https://marinespecies.org/urmo/aphia.php?p=taxdetails&id=249604 on 2025-02-24