Cita APA (7a ed.)

Robles, G. (2013). Sketchbook Pro digital painting essentials. Packt Publishing.

Cita Chicago Style (17a ed.)

Robles, Gil. Sketchbook Pro Digital Painting Essentials. Birmingham: Packt Publishing, 2013.

Cita MLA (9a ed.)

Robles, Gil. Sketchbook Pro Digital Painting Essentials. Packt Publishing, 2013.