Glen, W. (1960). Pliocene Fresh-Water Gastropods from San Mateo County, California <em>Journal of Paleontology</em>. 34(6): 1207-1209 page(s): 1209, text-figs 1A-1D [details]
MolluscaBase eds. (2021). MolluscaBase. Parapholyx durhami Glen, 1960 †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: http://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1262718 on 2025-05-23
Marine Species Traits editorial board (2025). Marine Species Traits. Parapholyx durhami Glen, 1960 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1262718 on 2025-05-23
original descriptionGlen, W. (1960). Pliocene Fresh-Water Gastropods from San Mateo County, California <em>Journal of Paleontology</em>. 34(6): 1207-1209 page(s): 1209, text-figs 1A-1D [details]