60. References
Lee Lefever – The Art Of Explanation (2013, Wiley)
Dan Roam – The Back Of The Napkin (2009, Marshall Cavendish)
Mike Rhode – The Sketchnote Handbook (2013, Peachpit Press)
Saul Greenberg, Sheelagh Carpendale, Nicolai Marquardt,
Bill Buxton – Sketching User Experiences (2012, Elsevier)