APA (7th ed.) Citation

Walker, W. E. (1981). Models in the policy process: Past, present, and future. Rand Corp..

Chicago Style (17th ed.) Citation

Walker, Warren E. Models in the Policy Process: Past, Present, and Future. Santa Monica, Calif.: Rand Corp., 1981.

MLA (9th ed.) Citation

Walker, Warren E. Models in the Policy Process: Past, Present, and Future. Rand Corp., 1981.