Articles provide specialized or focused information on one aspect of a topic.
Books or encyclopedias should be consulted for background reading, in depth analysis. Articles will contain information too current to have appeared in books. They often have journal or review or quarterly as part of the title and may only be available to members of a group or by subscription Popular magazines have an attractive appearance, often on glossy paper, with many photographs and eye-catching graphics. They are usually sold at newsstands or bookstores and are usually published on a weekly, bi-weekly, or monthly basis.