Models in the policy process :
past, present, and future /
Warren E. Walker.
APA Citation
Walker, W. E. (1981). Models in the policy process: past, present, and future. Santa Monica, Calif.: Rand Corp..
MLA Citation
Walker, Warren E. Models In the Policy Process: Past, Present, And Future. Santa Monica, Calif.: Rand Corp., 1981.
Warning: These citations may not always be complete (especially for serials).