Παραπομπή σε μορφή APA (7η εκδ.)

Alexander, E. R. (1992). Approaches to planning: Introducing current planning theories, concepts and issues (2nd ed.). Gordon and Breach Science.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Alexander, Ernest R. Approaches to Planning: Introducing Current Planning Theories, Concepts and Issues. 2nd ed. Philadelphia: Gordon and Breach Science, 1992.

Παραπομπή σε μορφή MLA (9th εκδ.)

Alexander, Ernest R. Approaches to Planning: Introducing Current Planning Theories, Concepts and Issues. 2nd ed. Gordon and Breach Science, 1992.