Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira da Rocha, R.; Swalla, B.J.; Turon, X. (2024). Ascidiacea World Database.
Botryllus firmus Monniot F. & Monniot C., 1996. Accessed through: Marine Species Traits editorial board (2024) Marine Species Traits at: https://www.marinespecies.org/traits./aphia.php?p=taxdetails&id=252311 on 2024-05-03
Marine Species Traits editorial board (2024). Marine Species Traits.
Botryllus firmus Monniot F. & Monniot C., 1996. Accessed at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=252311 on 2024-05-03