Via Scott Meyers.
Meyers is world-famous as the author of Effective C++ and More Effective C++. He is also the editor of the Effective Development Series from Addison Wesley.
Code Quality: The Open Source Perspective
Considering the background of both the author and the editor, this book (though I haven't got a chance to read it yet), is probably going to be very good.
The book is by Diomidis Spinellis.
Spinellis also wrote Code Reading: The Open Source Perspective, which won a 2004 Software Development Productivity Award:
The Foreword to the book Code Reading is by Dave Thomas - one of the two Pragmatic Programmers - its very worth reading.
From Spinellis' home page:
"Diomidis Spinellis has been developing the techniques presented in this book since 1985 while writing and maintaining more than 250,000 lines of code for a number of innovative and award-winning commercial and open-source projects. He received his M.Eng. in software engineering and his Ph.D. in computer science from the University of London's Imperial College. Currently he is an associate professor in the Department of Management Science and Technology at the Athens University of Economics and Business.