AAA uses The Chicago Manual of Style (15th edition, 2003) and Merriam-Webster’s Collegiate Dictionary (11th edition, 2006). This guide is an outline of style rules basic to our journal editing. Where no rule is present in this guide, follow Chicago. In Webster’s, use the first spelling if there is a choice and use American (rather than British) spellings. This guide does not apply to newsletters, which deviate frequently from these guidelines in the interest of space and tend to follow many Associated Press style rules.