Pennington, R. R. (1990). Company Law (6th ed.). Butterworths.
Chicago Style aipamenaPennington, Robert R. Company Law. 6th ed. London: Butterworths, 1990.
MLA aipamenaPennington, Robert R. Company Law. 6th ed. Butterworths, 1990.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.