Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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