Holiday, R. (2014). Obstacle is the way: The ancient art of turning adversity to advantage (NA.). Profile Books.
Chicago-referens (17:e uppl.)Holiday, Ryan. Obstacle Is the Way: The Ancient Art of Turning Adversity to Advantage. NA. London: Profile Books, 2014.
MLA-referens (9:e uppl.)Holiday, Ryan. Obstacle Is the Way: The Ancient Art of Turning Adversity to Advantage. NA. Profile Books, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.