Kay, R. F., & Grine, F. E. (1989). Tooth Morphology, wear, and diet in Austrolopithecus and Paranthropus. In F. E. Grine (Ed.), Evolutionary History of the “Robust” Austrolopithecines (pp. 427–447). New York: Aldine de Gruyter.

Kay, R. F., and F. E. Grine. “Tooth Morphology, wear, and diet in Austrolopithecus and Paranthropus.” In Evolutionary History of the “Robust” Austrolopithecines, edited by F. E. Grine, 427–47. New York: Aldine de Gruyter, 1989.

Kay RF, Grine FE. Tooth Morphology, wear, and diet in Austrolopithecus and Paranthropus. In: Grine FE, editor. Evolutionary History of the “Robust” Austrolopithecines. New York: Aldine de Gruyter; 1989. p. 427–47.

Kay, R. F., and F. E. Grine. “Tooth Morphology, wear, and diet in Austrolopithecus and Paranthropus.” Evolutionary History of the “Robust” Austrolopithecines, edited by F. E. Grine, Aldine de Gruyter, 1989, pp. 427–47.

Kay RF, Grine FE. Tooth Morphology, wear, and diet in Austrolopithecus and Paranthropus. In: Grine FE, editor. Evolutionary History of the “Robust” Austrolopithecines. New York: Aldine de Gruyter; 1989. p. 427–447.