References
- Adams, J. S. 1970. Residential Structure of Midwestern Cities. Annals of the Association of American Geographers 60 (1): 37–62.
- Bartley, K. F. 2006. Technology and the Convergence of U.S. Urban Migration Patterns: 1970–2000. Growth and Change 37 (1): 82–106.
- Borchert, J. R. 1967. American Metropolitan Evolution. Geographical Review 57 (3): 301–332.
- Brunn, S. D., J. F. Williams, and D. J. Zeigler. 2003. Cities of the World: World Regional Urban Development. 3rd ed. Lanham , Md. : Rowman & Littlefield.
- Bunge, W. 1966. Theoretical Geography. 2nd ed. Lund Studies in Geography Series C: General and Mathematical Geography, 1. Lund , Sweden : Gleerup.
- Ceh, B., and J. D. Gatrell. 2006. R&D Production in the United States: Rethinking the Snowbelt‐Sunbelt Shift. Social Science Journal 43 (4): 529–551.
- Conzen, M. P. 1977. The Maturing Urban System in the United States, 1840–1910. Annals of the Association of American Geographers 67 (1): 88–108.
- Earle, C. 2003. The American Way: A Geographical History of Crisis and Recovery. Lanham , Md. : Rowman & Littlefield.
- Elliott, J. R. 1997. Cycles within the System: Metropolitanisation and Internal Migration in the U.S., 1965–90. Urban Studies 34 (1): 21–41.
- Eysberg, C. D. 1989. The Origins of the American Urban System: Historical Accident and Initial Advantage. Journal of Urban History 15 (2): 185–195.
- Golledge, R., and D. Amedeo. 1968. On Laws in Geography. Annals of the Association of American Geographers 58 (4): 760–774.
- Gottdiener, M. 1983. Understanding Metropolitan Deconcentration: A Clash of Paradigms. Social Science Quarterly 64 (2): 227–246.
- Gray, P. T., Jr., and G. M. Sherwin. 2007. AP®Human Geography: Teacher's Guide. New York: College Board. [apcentral.collegeboard.com/apc/members/repository/ap07_humangeo_teachersguide.pdf].
- Hartshorn, T. 1992. Interpreting the City: An Urban Geography. 2nd ed. New York: Wiley.
- Harvey, D. 1969. Explanation in Geography. London : Edward Arnold.
- Kaplan, D., J. O. Wheeler, and S. Holloway. 2008. Urban Geography 2nd ed. Hoboken , N.J. : Wiley.
- Lukermann, F. 1964. Geography as a Formal Intellectual Discipline and the Way in Which It Contributes to Human Knowledge. Canadian Geographer 8 (4): 167–172.
- Lukermann, F. 1965. Geography: De Facto or De Jure. Journal of the Minnesota Academy of Science 32: 189–196.
- Morcotullio, P. J., and N. B. Schulz. 2006. Comparison of Energy Transition in the United States and Developing and Industrializing Economies. World Development 35 (10): 1650–1683.
- NRC [National Research Council]. 1997. Rediscovering Geography: New Relevance for Science and Society. National Research Council, Commission on Geosciences, Environment, and Resources, Board on Earth Sciences and Resources, Rediscovering Geography Committee. Washington , D.C. : National Academy Press.
- Ross, S. L. 1993. Dimensions of Urban Structure: An Examination of Construct Validation. Urban Studies 30 (7): 1109–1128.
- Rubenstein, J. M. 2008. The Cultural Landscape: An Introduction to Human Geography. 9th ed. Upper Saddle River , N.J. : Prentice Hall.
- Wikipedia. 2009. Borchert's Epochs. Wikipedia, the Free Encyclopedia. [http://en.wikipedia.org/wiki/Borchert%27s_Epochs].