Joshi, V. (2015). Electronic Payment System. Chandralok Prakashan.
Chicago-čujuhus (17. p.)Joshi, V.N. Electronic Payment System. Kanpur: Chandralok Prakashan, 2015.
MLA-čujuhus (9. p.)Joshi, V.N. Electronic Payment System. Chandralok Prakashan, 2015.
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