This article incorporates CC-BY-3.0 text from the reference.^[1]

• Knapp (1857). Notice of a marked variety of Patella vulgata (proposed to be named var. intermedia), found in Guernsey and Jersey (from Information communicated by Dr. Knapp). Annals and Magazine of Natural History (2) 19: 211-213.
• Mabille, J., 1888. De quelques coquilles nouvelles. Bulletin de la Société Philomathique de Paris 7(12): 73-82
• Backeljau, T. (1986). Lijst van de recente mariene mollusken van België [List of the recent marine molluscs of Belgium]. Koninklijk Belgisch Instituut voor Natuurwetenschappen: Brussels, Belgium. 106 pp.
• Nakano T. & Ozawa T. (2007). Worldwide phylogeography of limpets of the order Patellogastropoda: molecular, morphological and paleontological evidence. Journal of Molluscan Studies 73(1): 79–99

• Reeve, L. A. (1854-1855). Monograph of the genus Patella. In: Conchologia Iconica, or, illustrations of the shells of molluscous animals, vol. 8, pls 1-42 and unpaginated tex. L. Reeve & Co., London.
• Mabille, J. (1888). De quelques coquilles nouvelles. Bulletin de la Société Philomathique de Paris. ser. 7, 12 (2): 73-82
• Gmelin J.F. (1791). Vermes. In: Gmelin J.F. (Ed.) Caroli a Linnaei Systema Naturae per Regna Tria Naturae, Ed. 13. Tome 1(6). G.E. Beer, Lipsiae [Leipzig. pp. 3021-3910]
• Locard, A. (1891). Les coquilles marines des côtes de France. Annales de la Société Linnéenne de Lyon. 37: 1-385
• Pilsbry, H. A. (1891-1892). Manual of conchology, structural and systematic, with illustrations of the species. Ser. 1. Vol. 13: Acmaeidae, Lepetidae, Patellidae, Titiscaniidae. pp 1-195, pls 1-74. Philadelphia, published by the Conchological Section, Academy of Natural Sciences.
• Jeffreys J.G. (1862-1869). British conchology. Vol. 1: pp. cxiv + 341
• Pallary, P. (1920). Exploration scientifique du Maroc organisée par la Société de Géographie de Paris et continuée par la Société des Sciences Naturelles du Maroc. Deuxième fascicule. Malacologie. i>Larose, Rabat et Paris pp. 108. 1(1): map
• Koufopanou, V., Reid, D.G., Ridgeway, S.A., & Thomas, R.H. (1999). A molecular phylogeny of the patellid limpets (Gastropoda: Patellidae) and its implications for the origins of their antitropical distribution. Molecular Phylogenetics and Evolution. 11(1): 138-156.

Wikimedia Commons has media related to Patella depressa.