There are several ways to identify plagiarism. A subject matter expert may recognize ideas and expressions as they read a work submitted to them. In addition, many readers are familiar with the tone and voice of the author of a work. When a passage of text seems to change in style from the author's traditional writing, plagiarism may be suspected.
Google, or a similar search engine, is often employed as a quick and free way to compare a passage of text suspected to be plagiarized to passages found online. Fee-based services, such as Viper, Turnitin, or Writecheck, allow either readers or writers to compare a piece of writing against the service provider's vast databank of text for similarity.
These online tutorials teach users how to identify plagiarism and understand how and when to attribute work. Those that contain a quiz allow the user to test their skills and earn a certificate of completion are indicated.
Writers can avoid plagiarism by maintaining careful notes and providing appropriate credit to original authors as writers create their own work. Citation management software, such as EndNote, assist writers in creating citations and bibliographies.