Blodgett, R. H. (1949). Comparative economic systems. Macmillan.
Chicago Style aipamenaBlodgett, Ralph Hamilton. Comparative Economic Systems. New York: Macmillan, 1949.
MLA aipamenaBlodgett, Ralph Hamilton. Comparative Economic Systems. Macmillan, 1949.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.