1. Archer, J. Clark, 1983, The geography of federal fiscal politics in the United States of America: an exploration. Environment and Planning C: Government and Policy , Vol. 1, 377–400.
2. Berry, Brian J.L. and Dahmann, Donald C., 1977, Population Redistribution in the United States in the 1970's. Washington, DC: National Academy of Sciences.
3. Carter, Harold, 1972, The Study of Urban Geography. London: Edward Arnold.
4. Cox, Kevin R., 1979, Location and Public Problems. Chicago: Maaroufa.
5. Forstall, Ronald L. and Fulton, Philip N., 1976, The official SCSA/SMSA definition: concept and practice. Statistical Reporter. Washington, DC: Statistical Policy Division, Office of Management and Budget, No. 77–1, 1–11.