Cita APA (7th ed.)

Walker, T., Sprung-Much, N., & Goubran, S. (2020). Environmental policy: An economic perspective. Wiley-Blackwell.

Cita Chicago (17th ed.)

Walker, Thomas, Northrop Sprung-Much, i Sherif Goubran. Environmental Policy: An Economic Perspective. Hoboken, NJ: Wiley-Blackwell, 2020.

Cita MLA (9th ed.)

Walker, Thomas, et al. Environmental Policy: An Economic Perspective. Wiley-Blackwell, 2020.