Cronin, J. F. (1937). Rugged individualism. Pub. for the Social action Dept., N.C.W.C., by the Paulist Press.
Lua i Stíl Chicago (17ú heag.)Cronin, John F. Rugged Individualism. New York, N.Y.: Pub. for the Social action Dept., N.C.W.C., by the Paulist Press, 1937.
Lua MLA (8ú heag.)Cronin, John F. Rugged Individualism. Pub. for the Social action Dept., N.C.W.C., by the Paulist Press, 1937.
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