1. 1984. A comparative study of tooth root morphology in the great apes, modern man and early hominids. Ph.D. thesis, University of London.
2. . 1990. An introduction of human evolutionary anatomy. New York: Academic Press. p 151.
3. . 1998. Supernumerary roots of mandibular molar teeth. In: editor. Human dental development, morphology and pathology: a tribute to Albert A. Dahlberg. University of Oregon anthropological papers no. 54. Eugene: University of Oregon. p 201-214.
4. Rates of anterior tooth wear in Middle Pleistocene hominins from Sima de los Huesos (Sierra de Atapuerca, Spain)
5. , . 1991. What big teeth you had Grandma! Human tooth size, past and present. In: , editors. Advances in dental anthropology. Toronto: Wiley-Liss. p 33-57.