“Beyond Performance”, Scott Keller & Colin Price, McKinsey, 2011
“Unboss”, Lars Kolind & Jacob Bøtter, Jyllands-Postens Forlag, 2012
“The State of Perfection”, Joseph Riggio, Smashwords Edition, 2012
“Do What you Do Best!”, Henrik Wenøe & Joseph Riggio, Acuity World Press, 2011