Well, actually if you’ve already got Philip Kotler: Marketing Management (12th Edition), approx $130 and you will not be specialising in MR, then in my humble opinion, you don’t need another book. Although some German marketing books will do the job just as well (see here)

But if you are, and your a German MBA, then my recommended reading is

Hüttner. Grundzüge der Marktforschung

It does what it says on the label and is the standard reference book at many German unis.