Pro .NET 4 Parallel Programming in C#
Adam Freeman
C# 4.0 in a Nutshell: The Definitive Reference
Joseph Albahari & Ben Albahari
Modern Authentication With Azure Active Directory for Web Applications
Vittorio Bertocci
Beginning C# 5.0 Databases
Vidya Vrat Agarwal
HTML5 for .NET Developers: Single Page Web Apps, JavaScript, ...
Jim Jackson & Ian Gilman