Cita APA (7th ed.)

ebrary, Inc, & Greenberg, S. (2012). Sketching user experiences. Elsevier.

Cita Chicago (17th ed.)

ebrary, Inc, i Saul Greenberg. Sketching User Experiences. Waltham, Mass.: Elsevier, 2012.

Cita MLA (9th ed.)

ebrary, Inc, i Saul Greenberg. Sketching User Experiences. Elsevier, 2012.