1. Driver, Harold E., and Richard P. Chaney 1970 Cross-cultural Sampling and Galton's Problem In A Handbook of Method in Cultural Anthropology . Raoul Naroll and Ronald Cohen, eds. Pp. 990-1003. Garden City : Natural History Press. Reprinted 1973, N.Y.: Columbia University Press.
2. Two Solutions to Galton's Problem
3. Reprinted In Readings in Cross-Cultural Methodology. Frank Moore, ed. Pp. 221-45. New Haven: HRAF Press.