Hallsmith, G. (2003). The Key to sustainable cities: Meeting human needs, transforming community systems. New Society Publishers.
Chicago-viite (17. p.)Hallsmith, Gwendolyn. The Key to Sustainable Cities: Meeting Human Needs, Transforming Community Systems. Gabriola Island, Canada: New Society Publishers, 2003.
MLA-viite (9. p.)Hallsmith, Gwendolyn. The Key to Sustainable Cities: Meeting Human Needs, Transforming Community Systems. New Society Publishers, 2003.
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