Samar, R. R. (2001). Smart makes secure Net payment with electronic cash card system. Manila Bulletin.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSamar, Red R. "Smart Makes Secure Net Payment with Electronic Cash Card System." Manila Bulletin 2001.
एमएलए (9वां संस्करण) प्रशस्ति पत्रSamar, Red R. "Smart Makes Secure Net Payment with Electronic Cash Card System." Manila Bulletin, 2001.
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