Cita APA (7th ed.)
Langbein, L. I., & Felbinger, C. L. (2006). Public program evaluation: A statistical guide. M.E. Sharpe.
Cita Chicago (17th ed.)
Langbein, Laura Irwin, i Claire L. Felbinger. Public Program Evaluation: A Statistical Guide. Armonk, N.Y.: M.E. Sharpe, 2006.
Cita MLA (9th ed.)
Langbein, Laura Irwin, i Claire L. Felbinger. Public Program Evaluation: A Statistical Guide. M.E. Sharpe, 2006.
Atenció: Aquestes cites poden no estar 100% correctes.