Contextualizing sources.Home / Contextualizing sources. Helps you to find information about the median impact factor of journals in a discipline or subfield. Helps you to discover some of the most influential journals in a discipline or sub-field. Helps you to discover the periodicals most often cited by scholars or professionals in a variety of disciplines. Teaches you to assess a journal’s significance by comparing is impact factor to other journals and to compare and contrast different ways of assessing a journal’s significance in a field. Helps you to find a specific journal’s impact factor and use it to assess the significance of a journal in a particular field. Helps you build skills in evaluating sources by answerng a series of common questions about the peer review process. Teaches you some techniques for evaluating a specific periodical. Teaches you to locate articles that cite an article you have already read in order to evaluate it.