Citazione APA

O'Sullivan, E., Rassel, G. R., & Berner, M. (2008). Research methods for public administrators (5th ed.). Pearson/Longman.

Stile di citazione Chicago

O'Sullivan, Elizabethann, Gary Raymond Rassel, e Maureen Berner. Research Methods for Public Administrators. 5th ed. New York: Pearson/Longman, 2008.

Citazione MLA

O'Sullivan, Elizabethann, et al. Research Methods for Public Administrators. 5th ed. Pearson/Longman, 2008.