The book was "Definitive guide to google adwords". You are working on organic
SEO, not PPC. Tell your boss that his "opinion" would be relevant if the book title was "Definitive guide to google optimization" or something similar...
It happens all the time, clients reading something somewhere and asking you to implement it. If you are the expert in house and you are paid for that, you need to make it clear that you are going to use your own strategies.