Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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