Shannon, L. W. (1957). Underdeveloped areas: A book of readings and research. Harper & Row.
Lua i Stíl Chicago (17ú heag.)Shannon, Lyle W. Underdeveloped Areas: A Book of Readings and Research. New York: Harper & Row, 1957.
Lua MLA (9ú heag.)Shannon, Lyle W. Underdeveloped Areas: A Book of Readings and Research. Harper & Row, 1957.
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