Voigtsberger, S. (1973). Some Ideas Concerning Aims, Tasks and Principles of Organization of Spatial Planning. The Institute of National Planning.
Chicago-čujuhus (17. p.)Voigtsberger, Siegfried. Some Ideas Concerning Aims, Tasks and Principles of Organization of Spatial Planning. Cairo: The Institute of National Planning, 1973.
MLA-čujuhus (9. p.)Voigtsberger, Siegfried. Some Ideas Concerning Aims, Tasks and Principles of Organization of Spatial Planning. The Institute of National Planning, 1973.
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