Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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