Dorfman, R. (1970). The price system. Prentice-Hall.
Chicago Style (17th ed.) ZitazioaDorfman, Robert. The Price System. New Delhi: Prentice-Hall, 1970.
MLA (9th ed.) ZitazioaDorfman, Robert. The Price System. Prentice-Hall, 1970.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.