APA (7th ed.) Citation

Robles, G. (2013). Sketchbook Pro digital painting essentials: Create stunning professional grade artwork using Sketchbook Pro. Packt Publishing.

Chicago Style (17th ed.) Citation

Robles, Gil. Sketchbook Pro Digital Painting Essentials: Create Stunning Professional Grade Artwork Using Sketchbook Pro. Birmingham: Packt Publishing, 2013.

MLA (9th ed.) Citation

Robles, Gil. Sketchbook Pro Digital Painting Essentials: Create Stunning Professional Grade Artwork Using Sketchbook Pro. Packt Publishing, 2013.

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