APA (7th ed.) Zitazioa
Laborde, C. M. (2010). Electronic signatures in international contracts. Peter Lang.
Chicago Style (17th ed.) Zitazioa
Laborde, Carolina M. Electronic Signatures in International Contracts. Frankfurt am Main: Peter Lang, 2010.
MLA (9th ed.) Zitazioa
Laborde, Carolina M. Electronic Signatures in International Contracts. Peter Lang, 2010.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.