How do I write an annotated bibliography?

Check these links to find helpful tips, with examples, for writing annotated bibliographies: 

How to Prepare an Annotated Bibliography, from the Reference Department of Instruction, Research, and Information Services (IRIS), Cornell University Library

Writing an Annotated Bibliography, from the Robert E. Kennedy Library, California Polytechnic State University Library Services

How to... Write an Annotated Bibliography, written by Kenneth Lyons, McHenry Library, University of California