Cita APA (7a ed.)

O'Connor, M., & Spash, C. L. (1999). Valuation and the environment: Theory, method and practice. Edward Elgar.

Cita Chicago Style (17a ed.)

O'Connor, Martin, y Clive L. Spash. Valuation and the Environment: Theory, Method and Practice. Cheltenham [etc.]: Edward Elgar, 1999.

Cita MLA (9a ed.)

O'Connor, Martin, y Clive L. Spash. Valuation and the Environment: Theory, Method and Practice. Edward Elgar, 1999.