For books and periodicals
|Question to Ask||Why Is It Important?||Where to Find|
|Is there an edition statement? (e.g.: 3rd edition) Not all books have later editions.||An edition statement indicates that the book was updated.||This information is usually on the cover, on the title page or back of the title page of a book.|
|Has the book been reprinted?||If the subject isn't time-sensitive, the book's content may not be updated in a new edition. Reprinting means that the book has sold well.||The page after the title page will list reprint dates separated by commas.|
|How long has the periodical been published?||If a periodical is currently publishing volume 103, it's clearly a well-established source. If it's on volume 1, its reputation is still in doubt.||The cover or table of contents page will give the volume number.|
A later edition can mean that the book has become a standard in the field and is reliable.
- a book that is hailed as a " classic" in its promotional blurbs, but only went through one printing
- a periodical that only published 2 issues, then went out of business