APA (7e ed.) Bronvermelding

Lubbock, T., & Martin, P. (2012). On their own initiative: How politicians use direct democracy in the United States.

Chicago (17e ed.) Bronvermelding

Lubbock, T., en P. Martin. On Their Own Initiative: How Politicians Use Direct Democracy in the United States. 2012.

MLA (9e ed.) Bronvermelding

Lubbock, T., en P. Martin. On Their Own Initiative: How Politicians Use Direct Democracy in the United States. 2012.