Do-It-Yourself Style Guides for All Occasions
http://www.stc.org/confproceed/1996/PDFs/PG540543.PDF

Magyar, Miki D.
STC Proceedings
1996

Abstract:

A style guide is a formal set of editorial decisions for a specific set of documents. It can serve many functions, and can apply to many kinds of 'documents'. Whenever you have a number of similar documents to create or edit, a style guide can save time and energy (thus reducing costs), and improve the final product. The contents and structure of your guide can be form-fitted to meet your needs. If you start small and follow these suggestions, you can easily generate a style guide that will be welcomed and used.