APA Citation

(1991). Adobe Photoshop version 4.0 user guide. San Jose, California: Adobe Systems.

Chicago Style Citation

Adobe Photoshop Version 4.0 User Guide. San Jose, California: Adobe Systems, 1991.

MLA Citation

Adobe Photoshop Version 4.0 User Guide. San Jose, California: Adobe Systems, 1991.

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