Treacy, G. C. (1946). Industry at the crossroads: A handbook on industrial relations based on the social encyclicals of Pope Leo XIII and Pope Pius XI. Paulist Press.
Lua i Stíl Chicago (17ú heag.)Treacy, Gerald C. Industry at the Crossroads: A Handbook on Industrial Relations Based on the Social Encyclicals of Pope Leo XIII and Pope Pius XI. New York: Paulist Press, 1946.
Lua MLA (8ú heag.)Treacy, Gerald C. Industry at the Crossroads: A Handbook on Industrial Relations Based on the Social Encyclicals of Pope Leo XIII and Pope Pius XI. Paulist Press, 1946.
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