When using journal impact factors, please note:
Journal Citation Reports (or JCR) is a product of ISI Web of Knowledge and is an authoratative resource for impact factor data. This database provides impact factors and rankings of many journals in the social and life sciences based on millions of citations. It offers numerous sorting options including impact factor, total cites, total articles, and immediacy index. In addition, JCR provides a five-year impact factor and visualized trend data.
Journal Citation Reports (JCR) generates journal impact factors (along with other citation data) from more than 12,000 journals and conference proceedings in the sciences and social sciences indexed in Web of Science. You can search by title, or select a subject category to get a sortable list.
You can customize the indicators to include: