The Profex LTD Sourcing in Procurement and Supply Book 4 is a study guide authored by CIPS, focusing on the topic of sourcing in procurement and supply. This book is part of a series that aims to provide comprehensive insights and knowledge in the field, helping adults and university students enhance their understanding of procurement and supply chain management. It serves as a valuable resource for those looking to deepen their understanding of sourcing strategies and best practices in the industry.