If you were to advise your customer service team to read a book, which book would you select?

I would rather recommend the following book.
What’s the Secret: To Providing a World-Class Customer Experience by John R.
DiJulius Get an inside look at the world-class customer service strategies at some of today’s best companies.
You’ll learn how companies like Disney, Nordstrom, and The Ritz-Carlton get 50,000 employees to deliver world-class customer service on a consistent basis- and how your company can too.
Focuses on the service elements of customer experience but I found it easy to read between the lines to see the operational decisions that were made throughout these organizations.

أنا لن أنصح فريق خدمة العملاء لدي بقراءة أي كتاب، لكني سأنصحهم باستخراج أي شيء مفيد لعملهم من كل ما يحبون قراءته.

I'd recommend a book related to customer behavior

Hi - I would recommend any good book to learn and master the particular skill, there are lots of....also i would recommend books written by Mr.
N.
R.
Narayna Murthy & Mr.
Bill Gates...

how to enjoy a perfect way of handling with your exceptions..

teamwork For Dr.
Ibrahim Elfiky

communicate with confidence by Dianna Booher

I would recommend to read a book which explains seller's brain and buye's attitude 

I would recommend "Raving Fans: A Revolutionary Approach To Customer Service".
It is a must read book.
Although it is a little bit old but it will turn your customers from regular customer to raving fan and this book can jump-start you in that direction You won't believe it, this book actually saved a lot of businesses because from its name it will revolutionize in your customer service Just Google it and enjoy the reviews you read on it Best Regards

Option 1: Standard operating procedure of the organisation.
Option 2: Customer Is King by Gautam Mahajan

i find history book great