1. Ingemar C., Matthew M., Jeffrey B., Jessica F., Ton K. Digital Watermarking and Steganography (Second Edition). Morgan Kaufmann Publishers Inc., San Francisco, CA, USA. (2007).
2. Katzenbeisser S.F.A., Petitcolas P. Information Hiding: Techniques for Steganography and Digital Watermarking. Computer Security Series: Artech House Books. (2000).
3. Gonzales R.C., Woods R.E. Digital Image Processing Third Edition. Prentice Hall. Upper Saddle River, New Jersey, 07458. (2010).
4. Alfatwa, Dean F. Watermarking pada Image Digital menggunakan Discrete Wavelet Transform. Program Studi Teknik Informatika, Institut Teknologi Bandung. (2011).
5. Anumol T.J. Karthigaikumar P. DWT based Invisible Image Watermarking Algorithm for Color Images. IJCA Special Issue on “Computational Science – New Dimensions and Perspectives” NCCSE. pp. 76–79. (2011).