Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2021). Ascidiacea World Database.
Sidnyum radiatum (Sluiter, 1906). Accessed through: RAS (Eds.) (2021) Register of Antarctic Species at: http://ras.biodiversity.aq/aphia.php?p=taxdetails&id=173672 on 2025-04-04
RAS (Eds.) (2025). Register of Antarctic Species.
Sidnyum radiatum (Sluiter, 1906). Accessed at: https://ras.biodiversity.aq/aphia.php/aphia.php?p=taxdetails&id=173672 on 2025-04-04