Cita APA (7a ed.)

Sugden, R., & Williams, A. H. (1978). The principles of practical cost-benefit analysis. Oxford University Press.

Cita Chicago Style (17a ed.)

Sugden, Robert, y Alan H. Williams. The Principles of Practical Cost-benefit Analysis. Oxford [etc.]: Oxford University Press, 1978.

Cita MLA (9a ed.)

Sugden, Robert, y Alan H. Williams. The Principles of Practical Cost-benefit Analysis. Oxford University Press, 1978.