APA aipamena

Marshall, A. (1981). Principles of economics. London: Macmillan.

Chicago Style aipamena

Marshall, Alfred. Principles of Economics. London: Macmillan, 1981.

MLA aipamena

Marshall, Alfred. Principles of Economics. London: Macmillan, 1981.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.