Hawley, A. H. (1979). Societal growth: Processes and implications. Collier Macmillan.
Lua i Stíl Chicago (17ú heag.)Hawley, Amos H. Societal Growth: Processes and Implications. Collier Macmillan, 1979.
Lua MLA (9ú heag.)Hawley, Amos H. Societal Growth: Processes and Implications. Collier Macmillan, 1979.
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