Hello Bjhn
These books are not on marketing, yet thay are about how to get the best out of language.
Training Trances by John Overdfurf & Julie Silverthorn. isbn 1-55552-069-3
Time for a change By Richard Bandler isbn 0-916990-28-1
Hypnotherapy By Dave Elman publised by Westwood publising Co.Glendale, CA
Take a look at www.neurosemantics.com
Lot's of good article's that you could play around with.
That might help.