1967 A wild wheat harvest in Turkey. Archaeology 20:199–201.
1969 Ethiopia: A center of diversity. Econ. Bot. 23:309–14.
1970 With J.M.J.deWet. Apomixis, polyploidy and speciation in Dichanthium. Evolution 24:270–77.
1971 With J.M.J.deWet. The origin and domestication of sorghum bicolor. Econ. Bot. 25:128–35.
Agricultural origins: Centers and noncenters. Science 174:468–74.
With J.M.J.deWet. Toward a rational classification of cultivated plants. Taxon 20:509–17.
1975 Crops and Man. Madison, Wise.: American Society of Agronomy.
Our vanishing genetic resources. Science 188:618–21.
1976 Diseases as a factor in plant evolution. Annu. Rev. Phytopathol. 14:31–51.
1977 Gene centers and gene utilization in American agriculture. Environ. Rev. 11:26–42.
1981 The early history of wheat: Earliest traces to sack of Rome. In Wheat Science Today and Tomorrow, eds. L.T.Evans and W.J.Peacock, pp. 1–19. Cambridge: Cambridge University Press.
1983 With T.Hymowitz. Introduction of the soybean to North America by Samuel Bowen in 1765. Econ. Bot. 37:371–79.