de Ven (eds) Oxford University Press, 2017, 305 pp., £55. ISBN: 9780198785972 This is a well-compiled book on knowledge integration, one that posits an understanding of advanced and specialised knowledge across boundaries rather than general knowledge. The central ideas of the book are presented in two distinct parts. Part I (from Chapters 2 to 5) discusses the conceptual underpinnings of the two themes: knowledge integration and boundaries. Part II (Chapters 6 to 15) presents findings from empirical studies on knowledge integration across boundaries, such as those between organisations, firms in countries at different levels of development, industry and academia, professional communities and individuals and groups within an organisation. This book is one of the products generated by the Knowledge Integration and Innovation Transnational Enterprises (KITE) research programme.The book begins with an introduction written by the editors (Chapter 1). Chapter 2 then provides an overview and typology of knowledge boundaries and the various means recommended to manage knowledge integration across boundaries. By delineating different types of knowledge boundary, Tell addresses the nature of knowledge in terms of its 'complexity, uncertainty, fallibility and incompleteness' (p. 38). The highlight of Chapter 3 lies in its attempt to address 'glitches', defined by Hoopes and Postrel (1999) as a class of potential alignment failures, utilising three rules: the black box principle, the study information rule and the powerboat-sailboat rule. Chapter 4 presents fascinating analyses and comparisons between absorptive capacity (through the concept of knowledge accumulation) and knowledge integration. In addition to the current mechanisms, routines and rules, Berggren, Sydow and Tell have extended the knowledge integration research agenda by including agents and activities in the integration of qualitatively novel and different types of knowledge. Chapter 5 focuses on the boundary spanning challenge of bridging the individual-organisation divide and the relationship this has to the generation of organisational knowledge. The outstanding feature of this conceptual chapter is when Lindkvist and Bengtsson remodel and extend Nonaka's original SECI model by identifying two additional modes: objectification and elicitation. This extension means the original SECI becomes an informed dual route model that incorporates the importance of individual-to-organisation into the knowledge integration process. Chapter 6 discusses open innovation, identified as one of the hottest topics in recent time (Huizingh 2011). Based on the results of empirical research, the authors show how knowledge flowing across boundaries can be bridged using a combination of complementary knowledge integration practices. Chapter 7 investigates how technological and strategic factors affect the implementation of outsourcing in a client-supplier relationship, and the ways in which these factors influence knowledge specialisation and integration. Castellucci and Carnab...