Sherif, M. H. (2000). Protocols for secure electronic commerce. CRC Press.
Dyfyniad Arddull ChicagoSherif, Mostafa Hashem. Protocols for Secure Electronic Commerce. New York: CRC Press, 2000.
Dyfyniad MLASherif, Mostafa Hashem. Protocols for Secure Electronic Commerce. CRC Press, 2000.
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