Cushman, J. A. (1923). The Foraminifera of the Vicksburg Group. <em>United States Geological Survey Professional Papers.</em> 133: 11-71., available online athttps://pubs.usgs.gov/pp/0133/report.pdf[details]
Hayward, B.W.; Le Coze, F.; Vachard, D.; Gross, O. (2025). World Foraminifera Database. Bolivina depressula Cushman, 1923 †. Accessed at: https://www.marinespecies.org/Foraminifera/aphia.php?p=taxdetails&id=522645 on 2025-05-22
original descriptionCushman, J. A. (1923). The Foraminifera of the Vicksburg Group. <em>United States Geological Survey Professional Papers.</em> 133: 11-71., available online athttps://pubs.usgs.gov/pp/0133/report.pdf[details]