Alexander, E. R. (1992). Approaches to planning: Introducing current planning theories, concepts and issues (2. ed.). Gordon and Breach.
Chicago-Zitierstil (17. Ausg.)Alexander, Ernest R. Approaches to Planning: Introducing Current Planning Theories, Concepts and Issues. 2. ed. Philadelphia u. a: Gordon and Breach, 1992.
MLA-Zitierstil (9. Ausg.)Alexander, Ernest R. Approaches to Planning: Introducing Current Planning Theories, Concepts and Issues. 2. ed. Gordon and Breach, 1992.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.