Leadership Mastery: How to Challenge Yourself and Others to Greatness.
استشهاد بنمط شيكاغوLeadership Mastery: How to Challenge Yourself and Others to Greatness.
MLA استشهادLeadership Mastery: How to Challenge Yourself and Others to Greatness.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.