Berry, J. M. (2009). The interest group society (5th ed.). Pearson Education, Inc.
Chicago (17e ed.) BronvermeldingBerry, Jeffrey M. The Interest Group Society. 5th ed. New York, NY: Pearson Education, Inc, 2009.
MLA (9e ed.) BronvermeldingBerry, Jeffrey M. The Interest Group Society. 5th ed. Pearson Education, Inc, 2009.
Let op: Deze citaties zijn niet altijd 100% accuraat.