An insightful book, which is well researched and well written...
https://www.amazon.co.uk/gp/customer-reviews/R3APN93CNVYNGV/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=0995584907
https://www.amazon.co.uk/gp/customer-reviews/R3APN93CNVYNGV/ref=cm_cr_getr_d_rvw_ttl?ie=UTF8&ASIN=0995584907