APA-referens (7:e uppl.)

Vig, N. J., & Kraft, M. E. (1990). Environmental policy in the 1990s: Toward a new agenda. CQ Press.

Chicago-referens (17:e uppl.)

Vig, Norman J., och Michael E. Kraft. Environmental Policy in the 1990s: Toward a New Agenda. Washington, D.C.: CQ Press, 1990.

MLA-referens (8:e uppl.)

Vig, Norman J., och Michael E. Kraft. Environmental Policy in the 1990s: Toward a New Agenda. CQ Press, 1990.