Kollman, K. (1998). Outside lobbying: Public opinion and interest group strategies. Princeton University Press.
Cita Chicago (17th ed.)Kollman, Ken. Outside Lobbying: Public Opinion and Interest Group Strategies. Princeton, N.J.: Princeton University Press, 1998.
Cita MLA (8th ed.)Kollman, Ken. Outside Lobbying: Public Opinion and Interest Group Strategies. Princeton University Press, 1998.
Atenció: Aquestes cites poden no estar 100% correctes.