(1990). Demands for improved environmental policies: Recommended actions of the WCED as annotations to the UN perspective (November 1989, (rev. version).). Schmidt.
Chicago-Zitierstil (17. Ausg.)Demands for Improved Environmental Policies: Recommended Actions of the WCED as Annotations to the UN Perspective. November 1989, (rev. version). Berlin: Schmidt, 1990.
MLA-Zitierstil (9. Ausg.)Demands for Improved Environmental Policies: Recommended Actions of the WCED as Annotations to the UN Perspective. November 1989, (rev. version). Schmidt, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.