"An annotated bibliography is a list of citations to books, articles, and documents. Each citation is followed by a brief (usually about 150 words) descriptive and evaluative paragraph, the annotation. The purpose of the annotation is to inform the reader of the relevance, accuracy, and quality of the sources cited." - Reference Department, Olin and Uris Libraries, Cornell University.
"Abstracts are the purely descriptive summaries often found at the beginning of scholarly journal articles or in periodical indexes. Annotations are descriptive and critical; they expose the author's point of view, clarity and appropriateness of expression, and authority." - Reference Department, Olin and Uris Libraries, Cornell University.
Ulrichsweb is an easy-to-search source which provides detailed information on more than 300,000 periodicals.
Use the CRAAP Model to evaluate your sources.
Currency: the timeliness of the information
Relevance: the importance of the information for your needs
Authority: the source of the information
Accuracy: the reliability, truthfulness, and correctness of the content
Purpose: the reason the information exists
Links for writing abstracts and for annotated bibliography creation: