APA-referens (7:e uppl.)

Voigtsberger, S. (1973). Some Ideas Concerning Aims, Tasks and Principles of Organization of Spatial Planning. The Institute of National Planning.

Chicago-referens (17:e uppl.)

Voigtsberger, Siegfried. Some Ideas Concerning Aims, Tasks and Principles of Organization of Spatial Planning. Cairo: The Institute of National Planning, 1973.

MLA-referens (9:e uppl.)

Voigtsberger, Siegfried. Some Ideas Concerning Aims, Tasks and Principles of Organization of Spatial Planning. The Institute of National Planning, 1973.

Varning: dessa hänvisningar är inte alltid fullständigt riktiga.