A preface or foreword deals with the genesis, purpose, limitations, and scope of the book and may include acknowledgments of indebtedness.

The foreword, says the Chicago Manual of Style, is usually written by someone other than the author or editor, usually someone eminent (to lend credibility to the book), and although the title page may say “Foreword by X,” if the foreword is only one or two pages (which is normal), the name of the foreword writer normally appears at the end of the foreword. (The title or affiliation of the author of the foreword may also appear there.) For details on positioning of these elements, and what kind of type to use, refer to one of those two manuals, if your publisher doesn't handle the formatting.