SPIN selling By Neil Rackham himself!
https://www.bing.com/videos/search?q=spin+selling+by+neil+rackham+video&&view=detail&mid=B7AACDF2C7CF5B517C8EB7AACDF2C7CF5B517C8E&&FORM=VRDGAR&ru=%2Fvideos%2Fsearch%3Fq%3Dspin%2Bselling%2Bby%2Bneil%2Brackham%2Bvideo%26qpvt%3Dspin%2Bselling%2Bby%2Bneil%2Brackham%2Bvideo%26FORM%3DVDREIs SPIN® Selling still relevant? Interview with Neil Rackham – Bing video