Dillwyn L.W. (1817). <i>A descriptive catalogue of Recent shells, arranged according to the Linnean method; with particular attention to the synonymy</i>. London: John and Arthur Arch. Vol. 1: 1-580; Vol. 2: 581-1092 + index [29 pp.]. , available online athttps://www.biodiversitylibrary.org/page/11670899[details]
MolluscaBase (2018). Bulla amygdalum Dillwyn, 1817. Accessed through: Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2018) European Register of Marine Species at: http://www.marbef.org/data/aphia.php?p=taxdetails&id=747882 on 2021-01-16
Costello, M.J.; Bouchet, P.; Boxshall, G.; Arvanitidis, C.; Appeltans, W. (2021). European Register of Marine Species. Bulla amygdalum Dillwyn, 1817. Accessed at: http://www.vliz.be/vmdcdata/narms/narms.php?p=taxdetails&id=747882 on 2021-01-16
original descriptionDillwyn L.W. (1817). <i>A descriptive catalogue of Recent shells, arranged according to the Linnean method; with particular attention to the synonymy</i>. London: John and Arthur Arch. Vol. 1: 1-580; Vol. 2: 581-1092 + index [29 pp.]. , available online athttps://www.biodiversitylibrary.org/page/11670899[details]