From OWL (Purdue)
Associated Press style provides guidelines for news writing. Many newspapers, magazines and public relations offices across the United States use AP style. Although some publications such as the New York Times have developed their own style guidelines, a basic knowledge of AP style is considered essential to those who want to work in print journalism.
This Web page is intended to provide an introduction to AP style and a summary of some AP style rules; however, the Associated Press Stylebook includes more than 5,000 entries – far more than can be covered here. For a complete guide to AP style, writers should consult the most recent edition of the Associated Press Stylebook or visit the AP Stylebook website.