APA Citation

Hammel, M. J. The artist's guide to GIMP: Creative techniques for photographers, artists, and designers (2nd edition.).

Chicago Style Citation

Hammel, Michael J. The Artist's Guide to GIMP: Creative Techniques for Photographers, Artists, and Designers. 2nd edition.

MLA Citation

Hammel, Michael J. The Artist's Guide to GIMP: Creative Techniques for Photographers, Artists, and Designers. 2nd edition.

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