APA (7th ed.) Citation

Khalifa, O. O., Islam, M. R., Khan, S., & Shebani, M. S. (2004). Communications cryptography.

Chicago Style (17th ed.) Citation

Khalifa, Othman Omran, Md. Rafiqul Islam, Sheroz Khan, and Mohammed S. Shebani. Communications Cryptography. 2004.

MLA (9th ed.) Citation

Khalifa, Othman Omran, et al. Communications Cryptography. 2004.