Howard,Michael. (1983). Profits in economic theory. The Macmillan Press Ltd.
Chicago Style aipamenaHoward,Michael. Profits in Economic Theory. London: The Macmillan Press Ltd, 1983.
MLA aipamenaHoward,Michael. Profits in Economic Theory. The Macmillan Press Ltd, 1983.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.