I am a great fan of Dr Stephen R Covey, and so I buy his older works to see how his ideas developed.
This book, published in 1970, was essentially written for his church (LDS), but don't let that put you off (although why that should I don't know).
I have now seen how his philosophies 'started', seen their origins and discovered how much thought has gone into what developed between 1970 and 2011 with his publishing of The 3rd Alternative.
Spend a couple of pounds and discover where Dr Covey "came from", more about him, and how he was able to educate people in a way that millions have found to be incredibly effective. It may only be academic research but it's worth the time.