Since this is not my area of expertise, I searched Google under the key words "organizational core values" to get these possible sources:
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.
I hope this helps. Thanks for asking.
I couldn't help thinking of the SS during WWII on this question.
I think the answer is what do leaders do more than what they say. Here is a nice simple list of leadership responsibilities on establishing values.