An annotated bibliography provides brief summaries of and reflections on sources related to a research topic. Each source citation is followed by a paragraph annotation that may describe the source's key points and focus, evaluate its usefulness and limitations, and consider how it relates to the research topic. Annotations follow a consistent format and writing style, are typically 100-300 words, and arrange sources alphabetically. Examples demonstrate how to write effective annotations through descriptive summaries, evaluations of sources, and reflections on their relevance.