Cita APA (7a ed.)

Helms, R. B. (1981). Drugs and health: Economic issues and policy objectives. AEI symposia / America Enterprise Institute for Public Policy Research.

Cita Chicago Style (17a ed.)

Helms, Robert B. "Drugs and Health: Economic Issues and Policy Objectives." AEI Symposia / America Enterprise Institute for Public Policy Research 1981.

Cita MLA (8a ed.)

Helms, Robert B. "Drugs and Health: Economic Issues and Policy Objectives." AEI Symposia / America Enterprise Institute for Public Policy Research, 1981.