Hofmann, W. (1967). The Public Interest Pressure Group: The Case of the Deutsche Städtetag.
Cita Chicago (17th ed.)Hofmann, Wolfgang. The Public Interest Pressure Group: The Case of the Deutsche Städtetag. [s.l.], 1967.
Cita MLA (8th ed.)Hofmann, Wolfgang. The Public Interest Pressure Group: The Case of the Deutsche Städtetag. 1967.
Atenció: Aquestes cites poden no estar 100% correctes.