Gaya APA

O'Day, K., Alten, J, W, V. (1999). Adobe photoshop : user guide & tutorial (Limited Edition). USA: Adobe Systems Incorporated.

Gaya MLA

O'Day, Kate., Alten, Judith, Walthers, Von. "Adobe photoshop : user guide & tutorial". Limited Edition USA: Adobe Systems Incorporated, 1999. Text.