An annotated bibliography is a list of citations for article, encyclopedia, web, and book sources. Citations are listed in alphabetical order.As a rule of thumb, the acknowledgement section should be a single short paragraph of say half a dozen lines. Annotation helps the reader know whether the work cited will be helpful to a specific research topic. Parts of an Annotation (MLA Annotation). It's a section where you express gratitude to those who supported and guided you throughout your research journey. The formatting instructions say: "Must be brief and must not include thanks to Editors or referees, effusive comments or dedications. " It is given as optional. Online legal forms are useful for frequent, basic, and necessary tasks. Citing Sources: Formatting your paper in APA style.