APA (7th ed.) Citation

Whitt, P. (2014). Beginning Photo Retouching and Restoration Using GIMP. Apress : Imprint: Apress.

Chicago Style (17th ed.) Citation

Whitt, Phillip. Beginning Photo Retouching and Restoration Using GIMP. Berkeley, CA: Apress : Imprint: Apress, 2014.

MLA (8th ed.) Citation

Whitt, Phillip. Beginning Photo Retouching and Restoration Using GIMP. Apress : Imprint: Apress, 2014.

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