Google Scholar (Journal) Metrics, see Other Journal Rankings
NIH ranking, see iCite
Publish or Perish software, see Citation Counts for Authors: Other Sources
Data contained in Experts.ASU is derived from Elsevier's Scopus database. As the name implies, only data for ASU faculty is available; for authors not in Experts.ASU, use the Scopus database to obtain a citation count. Because the data comes from the same source, you may intermix citation counts from Experts.ASU with citations counts from Scopus (provided the authors are in the same field and at the same career level.)
Google Scholar and other indexing and abstracting services such as SciFinder (chemistry) and PsycInfo (psychology) have citation counts for each article but they do not generate a citation report as Scopus and Web of Science does. Consequently, you'll have to add the citation counts for each article manually in order to obtain a total citation count for an individual.
Keep in mind:
Another option is Publish or Perish (PoP), free downloadable software that analyzes citation counts found through Google Scholar and Microsoft Academic Search. The software generates many different types of citation metrics useful for authors.