Ridgway, T.M., Stewart, B.A., Branch, G.M. & Hodgson, A.N. (1998). Morphological and genetic differentiation of Patella granularis (Gastropoda: Patellidae): recognition of two sibling species along the coast of southern Africa. Journal of Zoology, London. 245: 317–333.
Morphological and genetic differentiation of Patella granularis (Gastropoda: Patellidae): recognition of two sibling species along the coast of southern Africa.