We wish to acknowledge the many people who encouraged and supported
us in writing this book. Without their help, the book would never have
become a reality.
First, we would like to thank all our friends at Heinemann. It is such a pleasure
to work with this dedicated group of professionals. We want to give special thanks
to Maura Sullivan, the editoral director at Heinemann. It was her encouragement
that helped us finish this book, a book we found more difficult than others to com-
plete. Maura also does a wonderful job of suggesting titles and promoting our
books. Her expertise has made all our books better, and her friendship means a
great deal to us.
Our editor, Lisa Luedeke, read the manuscript carefully and gave us very helpful
suggestions. She helped us to rethink and rewrite some sections and some
whole chapters. The result is a book that more clearly expresses the ideas we wish to con-
vey. In addition to offering her helpful comments, Lisa encouraged us to keep
The final book looks both appealing and professional thanks to the skills of our
production editor, Vicki Kasabian. We are especially pleased with the new look of
the cover. We very much appreciate the extra care she always takes with the details
of our books.
We have worked with Beth Tripp on several books. The writing in the book looks
much improved thanks to her copyediting skills. Beth always catches writing errors