APA (7th ed.) Zitazioa
Singh, A. (1999). Company law (12th ed.). Eastern Book Co..
Chicago Style (17th ed.) Zitazioa
Singh, Avtar. Company Law. 12th ed. Lucknow [India]: Eastern Book Co., 1999.
MLA (9th ed.) Zitazioa
Singh, Avtar. Company Law. 12th ed. Eastern Book Co., 1999.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.