Samar, R. R. (2001). Smart makes secure Net payment with electronic cash card system. Manila Bulletin.
Cita Chicago (17th ed.)Samar, Red R. "Smart Makes Secure Net Payment with Electronic Cash Card System." Manila Bulletin 2001.
Cita MLA (9th ed.)Samar, Red R. "Smart Makes Secure Net Payment with Electronic Cash Card System." Manila Bulletin, 2001.
Atenció: Aquestes cites poden no estar 100% correctes.