Cita APA (7th ed.)

Gulbins, J. (2013). Mastering Photoshop layers: A photographer's guide. Rocky Nook, Incorporated.

Cita Chicago (17th ed.)

Gulbins, Jürgen. Mastering Photoshop Layers: A Photographer's Guide. Santa Barbara, CA: Rocky Nook, Incorporated, 2013.

Cita MLA (8th ed.)

Gulbins, Jürgen. Mastering Photoshop Layers: A Photographer's Guide. Rocky Nook, Incorporated, 2013.