Cita APA (7th ed.)

Layard, P. R. G. (1972). Cost-benefit analysis: Selected readings. Penguin Education.

Cita Chicago (17th ed.)

Layard, P. R. G. Cost-benefit Analysis: Selected Readings. Harmondsworth, Eng. ; Baltimore: Penguin Education, 1972.

Cita MLA (8th ed.)

Layard, P. R. G. Cost-benefit Analysis: Selected Readings. Penguin Education, 1972.