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Lua i Stíl Chicago (17ú heag.)United States Catholic Conference. Renewing the Earth: An Invitation to Reflection and Action on Environment in Light of Catholic Social Teaching : A Pastoral Statement of the United States Catholic Conference, November 14, 1991. Washington, D.C.: Office for Publishing and Promotion Services, United States Catholic Conference, 1992.
Lua MLA (8ú heag.)United States Catholic Conference. Renewing the Earth: An Invitation to Reflection and Action on Environment in Light of Catholic Social Teaching : A Pastoral Statement of the United States Catholic Conference, November 14, 1991. Office for Publishing and Promotion Services, United States Catholic Conference, 1992.