Hughes, H. S. (1965). The United States and Italy. Harvard University Press.
Chicago Style aipamenaHughes, Henry Stuart. The United States and Italy. Cambridge: Harvard University Press, 1965.
MLA aipamenaHughes, Henry Stuart. The United States and Italy. Harvard University Press, 1965.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.