Congressional Research Training Service. (1991). Comparative parliamentary systems. The Service.
Chicago-Zitierstil (17. Ausg.)Congressional Research Training Service. Comparative Parliamentary Systems. Quezon City: The Service, 1991.
MLA-Zitierstil (9. Ausg.)Congressional Research Training Service. Comparative Parliamentary Systems. The Service, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.