APA (7th ed.) Zitazioa
ebrary, Inc, Malbin, M. J., Mann, T. E., & Ornstein, N. J. (2008). Vital statistics on Congress 2008. Brookings Institution Press.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc, Michael J. Malbin, Thomas E. Mann, eta Norman J. Ornstein. Vital Statistics on Congress 2008. Washington, D.C.: Brookings Institution Press, 2008.
MLA (9th ed.) Zitazioa
ebrary, Inc, et al. Vital Statistics on Congress 2008. Brookings Institution Press, 2008.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.