Cita APA (7th ed.)

Vig, N. J., & Kraft, M. E. (2019). Environmental policy: New directions for the twenty-first century (Tenth edition.). SAGE.

Cita Chicago (17th ed.)

Vig, Norman J., i Michael E. Kraft. Environmental Policy: New Directions for the Twenty-first Century. Tenth edition. Thousand Oaks, California: SAGE, 2019.

Cita MLA (9th ed.)

Vig, Norman J., i Michael E. Kraft. Environmental Policy: New Directions for the Twenty-first Century. Tenth edition. SAGE, 2019.