West, W. R. (1946). American goverment. New York: Prentice- Hall.
Chicago Style aipamenaWest, W. Reed. American Goverment. New York: Prentice- Hall, 1946.
MLA aipamenaWest, W. Reed. American Goverment. New York: Prentice- Hall, 1946.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.