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Keith Rowe is also the author of a series of books, each dealing with interpersonal skills, all of which are available worldwide on Amazon:

 https://www.amazon.com/kindle-dbs/entity/author/B003OP0T4A?_encoding=UTF8&node=283155&offset=0&pageSize=12&searchAlias=stripbooks&sort=author-sidecar-rank&page=1&langFilter=default#formatSelectorHeader 

Here are the two current releases - full-colour illustrated, and available in both eBook and hardcopy formats: