Cooper, G. A.; Grant, R. E. (1976). Permian Brachiopods from West Texas, IV. <em>Smithsonian Contributions to Paleobiology.</em> 21: 1923-2607.[details]
Traits (2025). Pontisia costata Cooper & Grant, 1976 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1764625 on 2025-05-17
Marine Species Traits editorial board (2025). Marine Species Traits. Pontisia costata Cooper & Grant, 1976 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1764625 on 2025-05-17
original descriptionCooper, G. A.; Grant, R. E. (1976). Permian Brachiopods from West Texas, IV. <em>Smithsonian Contributions to Paleobiology.</em> 21: 1923-2607.[details]