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Lua i Stíl Chicago (17ú heag.)International Joint Conference on Environment and Society in Transition New York. Managing the Planet. Englewood Cliffs, N.J: Prentice-Hall, Inc, 1972.
Lua MLA (9ú heag.)International Joint Conference on Environment and Society in Transition New York. Managing the Planet. Prentice-Hall, Inc, 1972.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.