Source
nHandbook of Walkthroughs, Inspections, and Technical Reviews by Freedman and Weinberg (Dorset House, 1990) nExtreme Programming Explained by Kent Beck (Addison Wesley, 2000)
The information I have on code reviews is mainly from this first book “Handbook of Walkthroughs, Inspections, and Technical Reviews” which was originally published in 1977.  It is the third edition that is from 1990.

Some more up-to-date ideas on reviewing code is contained in this book on extreme programming by Kent Beck.  The code reviews there are a side effect of pair programming.  This is the “review early and often” approach.