Eller, Warren S., Gerber, Brian J., and Scott E. Robinson. Public Administration Research Methods: Tools for Evaluation and Evidence-Based Practice. Routledge, 2018
Eller, Warren S., Gerber, Brian J., and Scott E. Robinson. Public Administration Research Methods: Tools for Evaluation and Evidence-Based Practice. Издательство Routledge, 2018 (г. Астана, Абая 33 А)