Purdue University's OWL Online Writing Lab hosts writing resources and teaching materials available for free online. They provide information on annotated bibliographies, Annotated, Purdue's OWL Online Writing Lab provides guidance on creating an annotated bibliography. Below are some topics covered by the OWL. Below are some topics covered by the OWL. Annotated Bibliographies - Definitions and FormatThe annotation appears on a new line directly after the source citation. The entire annotation is indented, to clearly indicate when the annotation ends and a new source appears. According to Turabian's guidelines, annotations should be formatted the same way as the main text of any article: double-spaced. Left aligned. Submit your article for APA review. Below is an example of an annotated bibliography. The annotated bibliography allows your professor to see the sources you will use in your final research paper. This shows that you have planned ahead by researching and have thought about the information you will need to write a comprehensive research paper,