亚速尔立法议会共和国议会 (葡萄牙) 马德拉立法议会 Guia do Património Cultural, Faial (Horta), Azores: Edição Atlantic View – Actividades Turísticas, Lda., 2003, ISBN 972-96057-1-8 (葡萄牙语)
尖菱蝶螺European waters, the Mediterranean Sea, the Atlantic Ocean (Azores, Cape Verde), the Northwest Atlantic (Gulf of Maine), the Caribbean Sea, the Gulf