^Occurrence of Kockelella variabilis Walliserin the Aymestry Limestone of Shropshire. F. H. T. Rhodes & G. Newall, Nature 199, 166 - 167 (13 July 1963); doi:10.1038/199166a0
^Taxonomy and evolution of Kockelella (Conodonta) from Silurian of Sardinia. Enrico Serpagli and Carlo Corradini, Bollettino della Societa Paleontologica Italiana, 01/1999; 38(2), pages 275-298