Comments and mentions from HN threads:
Ask HN: Best books or videos to get better at sales?
erikstarck: oes in to detail on the psychology of the pitch. It talks about the concept of framing and how you must control the frame to close the deal. Highly recommended.
Mentions by: austenallred
Ask HN: Which books have helped you the most professionally?
q-base: About selling and the psychology of selling. Really need to re-read that one actually.