Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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