APA (7th ed.) Citation

Johnston, R. J. (1982). The American urban system: A geographical perspective. St. Martin's Press.

Chicago Style (17th ed.) Citation

Johnston, R. J. The American Urban System: A Geographical Perspective. New York: St. Martin's Press, 1982.

MLA (9th ed.) Citation

Johnston, R. J. The American Urban System: A Geographical Perspective. St. Martin's Press, 1982.