Some reference to cloud computing books are

Cloud Design and Architecture

• Infrastructure as Code: Managing Servers in the Cloud by Kief Morris
• CSA Guide to Cloud Computing: Implementing Cloud Privacy and Security by Raj Samani
• Management Strategies for the Cloud Revolution: How Cloud Computing is Transforming Business and Why You Can’t Afford to be Left Behind, by Charles Babcock 
• Cloud Computing: A Practical Approach by Anthony T Velte, Toby J. Velte, Rovert Elsenpeter ( Alternate download )
• The Agile Architecture Revolution: How Cloud Computing, REST-Based SOA, and Mobile Computing Are Changing Enterprise IT, by Jason Bloomberg
• Cloud Computing: Concepts, Technology and Architecture, by Thomas Erl, Zaigham Mahmood and Ricardo Puttini
• Architecting the Cloud: Design Decisions for Cloud Computing Service Models, by Michael J. Kavis. Mike
• Enterprise Cloud Security and Governance: Efficiently set data protection and privacy principles by Zeal Vora
• Mastering Cloud Computing by Rajkumar Bhuyya

Cloud Solutions ( AWS, Google Cloud, Azure, Openstack, Vmware )

• Amazon Web Service for Dummies by Bernard Gorden
• AWS cloud dictionary and handbook
• Mastering Vmware vSphere6
• Google compute engine
• Building Your Next Big Thing with Google Cloud Platform: A Guide for Developers and Enterprise Architects
• Cloud Computing with Windows Azure
• Microsoft Azure Development Cookbook
• Complete knowledge base on Microsoft Azure
• Cloud Computing using Windows Azure for Beginners
• Mastering Openstack
• Learning Openstack Networking
• Openstack Cloud Computing Cookbook
• Openstack Cloud Computing: Architecture Guide