An annotated bibliography is similar to the reference list provided at the end of your paper. However, each reference or source is also paired with a short paragraph, known as an annotation. The annotation summarizes what the source is about and discusses how useful or reliable it is for your research paper. 

There are two main parts to an Annotated Bibliography:

1. The reference, and
2. The annotation

The reference should be provided in APA style and APA format.

The annotation can be written as one paragraph. This paragraph must include:

• Summary: a general overview of what you read, including key points.
• Credibility: information on what makes the article credible and any potential biases you noticed
• Usefulness: your opinion on how useful this article is to your research and why. 

An Annotated Bibliography should follow all of the APA formatting for a Reference List including:

• Accepted APA Fonts: Times New Roman (12-point) or Calibri (11-point)
• Heading: The first line of your annotated bibliography should say "Annotated Bibliography" in bold and centered. 
• Spacing: All text should be double-spaced.
• Indentations:
  • All references should have a hanging indent of 0.5 inches.
  • The entire annotation should be indented 0.5 inches.
• Alignment: All text should be left-aligned and not justified.
• Margins: Use 1 inch margins on all sides of the paper. This is the default margin size in Microsoft Word.
• Page Numbers: Every page of your annotated bibliography should have a page number in the upper left hand corner.