Accuracy: How reliable and free from error is the information contained in the source? Are there editors or editorial boards that take responsibility for checking the facts?
Authority: How qualified is the author to write on this subject? How reputable is the publisher? What is the publisher's past performance?
Objectivity: Is the information presented with a minimum of bias? If it is clearly a biased source, is this bias or viewpoint acknowledged in the resource?
Currency: Is the content of the source up-to-date? Is there a clear statement of date of publication? Is it necessary that this source be timely, or is publication date not a significant concern?
Coverage: Does the source cover the material a reader would expect to see after reading the title and preface? Are the topics covered in depth? Are there reference lists of other sources that an interested reader might explore?