APA (7th ed.) Citation

Walker, W. O., III. (1992). Drug control policy: Essays in historical and comparative perspective. Pennsylvania State University Press.

Chicago Style (17th ed.) Citation

Walker, William O., III. Drug Control Policy: Essays in Historical and Comparative Perspective. University Park, Pa.: Pennsylvania State University Press, 1992.

MLA (9th ed.) Citation

Walker, William O., III. Drug Control Policy: Essays in Historical and Comparative Perspective. Pennsylvania State University Press, 1992.