What is the best marketing book you have read?

Hey guys, I've just finished reading Seth Godins book, Purple Cow. I really loved this book and it taught me so much. I want to know what books you have read and what taught you the most about life and business?
To name my top 3 are: Purple Cow – Seth Godin
The 7 habits of highly effective people – Steven Covey
Anything by Zig Zigglar
Also, here is my review of Purple Cow http://audiblecoupon.com/purple-cow-seth-godin-review/
If you want it free, my referral link is at the bottom, I…
What is the best marketing book you have read?

See original post by sam scot