Slightly dated (the internet has become much more important) but useful overview of this area, with practical tips and descriptions of industry standards.
Interested in working in market research or just want to know what the firm you commissioned to do it for you actually does? Then you need a copy of this book. Market Research In Practice explains what market research is, the tools used to carry it out and what results you can expect from each campaign. By the end, you'll be able to perform your own research or evaluate the results of the firm you commissioned. The writing style is a little dry but informative.