APA (7th ed.) Citation

Chang, B. Z. Y. (2013). Compression in image recovery watermarking using PNG (Portable Network Graphic).

Chicago Style (17th ed.) Citation

Chang, Billy Zhi Yang. Compression in Image Recovery Watermarking Using PNG (Portable Network Graphic). 2013.

MLA (9th ed.) Citation

Chang, Billy Zhi Yang. Compression in Image Recovery Watermarking Using PNG (Portable Network Graphic). 2013.

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