Franklin

MLA

Goelker, Klaus, G Rossbach, and Jeremy Cloot. Gimp 2.8 for Photographers : Image Editing with Open Source Software. First edition. .

APA

Goelker, K., Rossbach, G., & Cloot, J. GIMP 2.8 for photographers : image editing with open source software. First edition. .

Chicago

Goelker, Klaus, G Rossbach, and Jeremy Cloot. GIMP 2.8 for Photographers: Image Editing with Open Source Software. First edition.