Goodman, S. F. (1998). Economics. Basingstoke: Macmillan Business.
Chicago Style aipamenaGoodman, S. F. Economics. Basingstoke: Macmillan Business, 1998.
MLA aipamenaGoodman, S. F. Economics. Basingstoke: Macmillan Business, 1998.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.