Kelsen, K. (2010). Unleashing the power of digital signage: Content strategies for the 5th screen. Focal Press.
Chicago-viite (17. p.)Kelsen, Keith. Unleashing the Power of Digital Signage: Content Strategies for the 5th Screen. Burlington, Mass: Focal Press, 2010.
MLA-viite (9. p.)Kelsen, Keith. Unleashing the Power of Digital Signage: Content Strategies for the 5th Screen. Focal Press, 2010.
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