APA (7th ed.) Citation

Kamel Arrifin, M. R., & Abu, N. A. (2010). A digital signature system.

Chicago Style (17th ed.) Citation

Kamel Arrifin, Muhammad Rezal, and Nor Azman Abu. A Digital Signature System. 2010.

MLA (9th ed.) Citation

Kamel Arrifin, Muhammad Rezal, and Nor Azman Abu. A Digital Signature System. 2010.

Warning: These citations may not always be 100% accurate.