Punnett, R.C. (1903). The Enteropneusta. <em>In: Gardiner J.S., editor. The Fauna and Geography of the Maldive and Laccadive Archipelagos. London: Cambridge University Press.</em> 2(2): 631-680 + Plates XXXVII-XLVI., available online athttps://www.biodiversitylibrary.org/page/10782509 page(s): 637 [details]
Swalla, B.J.; van der Land, J. (2024). Hemichordata World Database. Willeyia Punnett, 1903. Accessed through: World Register of Marine Species at: https://www.marinespecies.org/aphia.php?p=taxdetails&id=518790 on 2024-10-17
original descriptionPunnett, R.C. (1903). The Enteropneusta. <em>In: Gardiner J.S., editor. The Fauna and Geography of the Maldive and Laccadive Archipelagos. London: Cambridge University Press.</em> 2(2): 631-680 + Plates XXXVII-XLVI., available online athttps://www.biodiversitylibrary.org/page/10782509 page(s): 637 [details]