Marwick, J. (1953). Divisions and faunas of the Hokonui System (Triassic and Jurassic). <em>New Zealand Geological Survey Paleontological Bulletin.</em> 21:1–141, pl. 1–17.[details]
MolluscaBase eds. (2025). MolluscaBase. Tancredia allani Marwick, 1953 †. Accessed through: Marine Species Traits editorial board (2025) Marine Species Traits at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1550830 on 2025-05-11
Marine Species Traits editorial board (2025). Marine Species Traits. Tancredia allani Marwick, 1953 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1550830 on 2025-05-11
original descriptionMarwick, J. (1953). Divisions and faunas of the Hokonui System (Triassic and Jurassic). <em>New Zealand Geological Survey Paleontological Bulletin.</em> 21:1–141, pl. 1–17.[details]