Mihaly Csikszentmihalyi Quotes about Quality
Mihaly Csikszentmihalyi (2009). “Flow: The Psychology of Optimal Experience”, p.26, Harper Collins
Mihaly Csikszentmihalyi (2001). “Flow: the psychology of optimal experience”
Mihaly Csikszentmihalyi (2013). “Flow: The Psychology of Happiness”, p.46, Random House