Carlson, David L. 2017. Quantitative Methods in Archaeology Using R. Cambridge University Press, pp 72-77, 91-94.
Read, Dwight W. 1974. Some Comments on Typologies in Archaeology and an Outline of a Methodology. American Antiquity 39: 216-242.
Read, Dwight W. 2007. Artifact Classification: A Conceptual and Methodological Approach. Left Coast Press.