BB	Rubin, Kenneth S. Essential Scrum : a practical guide to the most popular agile process / Kenneth S. Rubin . 7th print. Upper Saddle River (New Jersey) : Addison-Wesley, imp. 2015
BC	Larman C. Practices for Scaling Lean & Agile Development: Large, Multisite, and Offshore Product Development with Large-Scale Scrum / Larman C, Vodde B. - 1st edition Addison-Wesley Professional, 2010