Cita APA (7th ed.)

ebrary, Inc, & Lunning, F. (2011). User enhanced. University of Minnesota Press.

Cita Chicago (17th ed.)

ebrary, Inc, i Frenchy Lunning. User Enhanced. Minneapolis: University of Minnesota Press, 2011.

Cita MLA (9th ed.)

ebrary, Inc, i Frenchy Lunning. User Enhanced. University of Minnesota Press, 2011.