APA

Vig N. J., Kraft M. E., . (1990). Environmental policy in the 1990s: toward a new agenda. Washington, D.C: CQ Press.

Chicago

Vig Norman J, Kraft Michael E, . 1990. Environmental policy in the 1990s: toward a new agenda. Washington, D.C: CQ Press.

Harvard

Vig N. J., Kraft M. E., . (1990). Environmental policy in the 1990s: toward a new agenda. Washington, D.C: CQ Press.

MLA

Vig Norman J, Kraft Michael E, . Environmental policy in the 1990s: toward a new agenda. Washington, D.C: CQ Press. 1990.