APA-viite (7. p.)

Birkland, T. A. (2016). An introduction to the policy process: Theories, concepts, and models of policy making (3rd ed.). M.E. Sharpe.

Chicago-viite (17. p.)

Birkland, Thomas A. An Introduction to the Policy Process: Theories, Concepts, and Models of Policy Making. 3rd ed. Armonk, N.Y.: M.E. Sharpe, 2016.

MLA-viite (9. p.)

Birkland, Thomas A. An Introduction to the Policy Process: Theories, Concepts, and Models of Policy Making. 3rd ed. M.E. Sharpe, 2016.