Yen, J. T.-C. (1958). Systematics and Distributions of <i>Pyrgulifera</i> Meek. <em>Annalen des Naturhistorischen Museums in Wien.</em> 62: 193-209., available online athttp://www.zobodat.at/pdf/ANNA_62_0193-0209.pdf page(s): 204-205, fig. 7 [details]
MolluscaBase eds. (2021). MolluscaBase. Pyrgulifera protarmata Yen, 1958 †. Accessed through: Marine Species Traits editorial board (2021) Marine Species Traits at: https://marinespecies.org/traits/aphia.php?p=taxdetails&id=1260879 on 2025-05-19
Marine Species Traits editorial board (2025). Marine Species Traits. Pyrgulifera protarmata Yen, 1958 †. Accessed at: https://www.marinespecies.org/traits/aphia.php?p=taxdetails&id=1260879 on 2025-05-19
original descriptionYen, J. T.-C. (1958). Systematics and Distributions of <i>Pyrgulifera</i> Meek. <em>Annalen des Naturhistorischen Museums in Wien.</em> 62: 193-209., available online athttp://www.zobodat.at/pdf/ANNA_62_0193-0209.pdf page(s): 204-205, fig. 7 [details]