Johnson, G. (2010). Research methods for public administrators (2nd ed.). M.E. Sharpe.
Cita Chicago (17th ed.)Johnson, Gail. Research Methods for Public Administrators. 2nd ed. Armonk, N.Y: M.E. Sharpe, 2010.
Cita MLA (9th ed.)Johnson, Gail. Research Methods for Public Administrators. 2nd ed. M.E. Sharpe, 2010.
Atenció: Aquestes cites poden no estar 100% correctes.