These may not be leadership books per se yet they are crucial for leaders to understand the world around them. I recommend these leadership audio books.
reading
How to Become a Better Reader
How can I become a better reader? Susan Wise Bauer rightly maintains that any literate man or woman can become a reader, and shows how.
5 Christian Leadership Books You Should Read This Summer
These 5 Christian leadership books to read this summer will help you to become a better leader through reading the experiences of others.