APA (7th ed.) Zitazioa
Radu, C. (2003). Implementing electronic card payment systems. Artech House.
Chicago Style (17th ed.) Zitazioa
Radu, Cristian. Implementing Electronic Card Payment Systems. Boston: Artech House, 2003.
MLA (9th ed.) Zitazioa
Radu, Cristian. Implementing Electronic Card Payment Systems. Artech House, 2003.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.