Schall, N. (1993). Appropriate techniques for regional development planning and management. Spring-Center.
Chicago-referens (17:e uppl.)Schall, Nicolaus. Appropriate Techniques for Regional Development Planning and Management. Dortmund, Germany: Spring-Center, 1993.
MLA-referens (9:e uppl.)Schall, Nicolaus. Appropriate Techniques for Regional Development Planning and Management. Spring-Center, 1993.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.