APA (7th ed.) Citation

Clark, T. M. (1998). Sams teach yourself Adobe Photoshop 5 in 21 days. Sams.

Chicago Style (17th ed.) Citation

Clark, T. Michael. Sams Teach Yourself Adobe Photoshop 5 in 21 Days. Indianapolis, Ind.: Sams, 1998.

MLA (8th ed.) Citation

Clark, T. Michael. Sams Teach Yourself Adobe Photoshop 5 in 21 Days. Sams, 1998.

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