It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
The Online Writing Lab (OWL) at Purdue University houses writing resources for Writing and Teaching Writing, Research, Grammar and Mechanics, Style Guides, ESL (English as a Second Language), and Job Search and Professional Writing.
This tutorial is designed to help students review common mistakes in English grammar, punctuation, organization, and writing styles, following American Psychological Association (APA) and Modern Language Association (MLA) guidelines.
The purpose of this tutorial is to promote academic integrity at Northern Illinois University by increasing students' awareness of academic integrity and offering strategies for students to protect themselves from academic dishonesty situations.