Cita APA (7th ed.)

Cropper, M. L., & Laibson, D. I. (1998). The implications of hyperbolic discounting for project evaluation. World Bank.

Cita Chicago (17th ed.)

Cropper, Maureen L., i David I. Laibson. The Implications of Hyperbolic Discounting for Project Evaluation. Washington, DC: World Bank, 1998.

Cita MLA (9th ed.)

Cropper, Maureen L., i David I. Laibson. The Implications of Hyperbolic Discounting for Project Evaluation. World Bank, 1998.