Cita APA (7th ed.)

O'Riordan, T., & Sewell, W. R. D. (1981). Project appraisal and policy review. John Wiley.

Cita Chicago (17th ed.)

O'Riordan, Timothy, i W. R. Derrick Sewell. Project Appraisal and Policy Review. Chichester: John Wiley, 1981.

Cita MLA (9th ed.)

O'Riordan, Timothy, i W. R. Derrick Sewell. Project Appraisal and Policy Review. John Wiley, 1981.