An annotated bibliography is a list of sources where each reference is followed by a short paragraph that summarises and evaluates it. UK tutors set it to make sure you have engaged critically with your reading before writing a literature review or dissertation. This complete guide explains what an annotated bibliography is, what each annotation should contain, the difference between descriptive and critical annotations, and how to format it correctly.
What Is an Annotated Bibliography?
It is a reference list with annotations. Each entry gives the full citation in your required style, followed by a concise paragraph — usually 100 to 200 words — that summarises the source, assesses its quality, and explains its relevance to your topic.
What Each Annotation Should Contain
✓ Summary — the source's main argument and scope.
✓ Evaluation — its credibility, methodology, strengths and limitations.
✓ Relevance — how it fits and informs your own research.
Descriptive vs Critical Annotations
A descriptive annotation simply summarises the source. A critical (or evaluative) annotation also judges its quality and usefulness. Most UK assignments want critical annotations — check your brief, but assume evaluation is expected.
How to Format It
List sources alphabetically by author, give each full citation in your required style (Harvard, APA, and so on), and place the annotation as an indented paragraph beneath. Keep formatting and citation style consistent throughout. See our Harvard referencing guide.
Choosing and Reading Sources
Select credible, relevant and reasonably current sources — peer-reviewed articles, scholarly books and reputable reports. Read each closely enough to summarise its argument and judge its rigour; an annotation is only as good as your engagement with the source.
Common Mistakes to Avoid
✓ Only summarising, with no evaluation.
✓ Inconsistent citation style.
✓ Annotations that are too long or too vague.
✓ Using weak or irrelevant sources.
✓ Forgetting to link the source to your topic.
Tips for a Higher Grade
Evaluate as well as summarise, keep each annotation concise and focused, use credible sources, stay consistent in style, and always explain relevance to your own work.
How Projectsdeal Helps
Assignment help, dissertation writing service and essay writing service.
Frequently Asked Questions
What is an annotated bibliography?
A list of sources where each citation is followed by a short paragraph summarising and evaluating it.
How long is each annotation?
Usually 100 to 200 words, though your brief may specify otherwise.
What should an annotation include?
A summary of the source, an evaluation of its quality, and its relevance to your research.
What is the difference between descriptive and critical annotations?
Descriptive annotations summarise; critical annotations also evaluate the source's quality and usefulness.
How do I format an annotated bibliography?
List sources alphabetically with full citations in your required style, each followed by an indented annotation.
Do annotations need citations?
Each entry begins with a full citation; the annotation itself does not usually need further references.
How many sources should it include?
As many as the brief requires; quality and relevance matter more than quantity.
What citation style should I use?
Whatever your department specifies — Harvard, APA, MLA or another — used consistently.
Is an annotated bibliography the same as a literature review?
No — a bibliography evaluates sources individually; a literature review synthesises them into a connected discussion.
How do I choose sources?
Pick credible, relevant and reasonably current scholarly sources that inform your topic.
Related Study Guides
How to Write a Literature Review • Harvard Referencing Guide • How to Reference in APA 7 • How to Write a Research Paper
Need Expert Academic Help?
ProjectsDeal provides trusted dissertation, thesis, and essay writing support for UK university students. Get matched with a specialist in your subject area.