Lubbock, T., & Martin, P. (2012). On their own initiative: How politicians use direct democracy in the United States.
Chicago-referens (17:e uppl.)Lubbock, T., och P. Martin. On Their Own Initiative: How Politicians Use Direct Democracy in the United States. 2012.
MLA-referens (9:e uppl.)Lubbock, T., och P. Martin. On Their Own Initiative: How Politicians Use Direct Democracy in the United States. 2012.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.