A Handbook published by the National Science Foundation.
Bridges – A Mixed Methods Network by Professor Abbas Tashakkori
An excellent guide to mixed methods concepts, writers, publications, and links and Web resources, developed by Dr. Abbas Tashakkor of Florida International University, co-editor of the Handbook on Mixed Methods Research in the Behavioral and Social Sciences (Sage Publications, 2003).
National Institutes of Health (NIH) – Office of Behavioral and Social Science Research
Guidelines for combining quantitative and qualitative research as well as standards for qualitative research. Identifies models and issues in using the models in NIH-funded research projects.