Google Scholar provides citation information for most books and articles in its database. Unlike the other databases, it includes books and working and conference papers. Note that the citation figures provided by Google Scholar may differ widely from other databases, such as Web of Science, for a number of reasons (which we will not go into here!).
You may wish to try the Google Universal Citation Gadget
The results are available on-screen and can also be copied to the Windows clipboard (for pasting into other applications) or saved to a variety of output formats (for future reference or further analysis). Publish or Perish includes a detailed help file with search tips and additional information about the citation metrics. NOTE: the software is FREE. There is a companion volume, which is currently on order
ImpactStory is a Web-based application that makes it easy to track the impact of a wide range of research artifacts (such as papers, datasets, slides, research code). The system aggregates impact data from many sources, from Mendeley to GitHub to Twitter and more, and displays it in a single, permalinked report.