APA (7th ed.) Citation

Zeki. Khedher, A. M., & Abdul Manaf, A. (2006). Digital watermarking and data hiding techniques.

Chicago Style (17th ed.) Citation

Zeki. Khedher, Akram M., and Azizah Abdul Manaf. Digital Watermarking and Data Hiding Techniques. 2006.

MLA (9th ed.) Citation

Zeki. Khedher, Akram M., and Azizah Abdul Manaf. Digital Watermarking and Data Hiding Techniques. 2006.

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