(1974). Human settlements: The environmental challenge : a compendium of United Nations Papers prepared for the Stockholm Conference on the Human Environment 1972. [s.l.]: United Nations.
Παραπομπή Chicago StyleHuman Settlements: The Environmental Challenge : A Compendium of United Nations Papers Prepared for the Stockholm Conference On the Human Environment 1972. [s.l.]: United Nations, 1974.
Παραπομπή MLAHuman Settlements: The Environmental Challenge : A Compendium of United Nations Papers Prepared for the Stockholm Conference On the Human Environment 1972. [s.l.]: United Nations, 1974.
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