An entry in an annotated bibliography begins with a reference and is followed by a short summary or commentary regarding the source listed. An entry may summarize a source or evaluate it, depending on the instructions you are given. When writing a brief summary, set the summary or commentary in parentheses. When writing a longer summary or commentary, set it in a new line — often as an indented paragraph.
Example:
Austen, Jane. Sense and Sensibility. London: Thomas Egerton, 1811.
This novel tells the story of the Dashwood family, focusing on the sisters Elinor and Marianne. The sisters are personifications of good sense (common sense) and sensibility (emotionality). Sense and Sensibility was a success upon publication and centered on the topics of love, marriage, and class.