Cita APA (7a ed.)

Barde, J., & Pearce, D. W. (1991). Valuing the environment: Six case studies. Earthscan.

Cita Chicago Style (17a ed.)

Barde, Jean-Philippe, y David W. Pearce. Valuing the Environment: Six Case Studies. London: Earthscan, 1991.

Cita MLA (9a ed.)

Barde, Jean-Philippe, y David W. Pearce. Valuing the Environment: Six Case Studies. Earthscan, 1991.