Being able to identify the appropriate research methodology for a research topic is an important skill to have, both when preparing for your own research project and when looking for studies that may already exist. The resources below will help you gain a better understanding of the different research methodologies available.
Drug Utilization Research by 
Essentials of Clinical Research by 
Understanding and Conducting Research in the Health Sciences by 
Randomized Controlled Trials: Design and Implementation for Community-Based Psychosocial Interventions by 
How to Design, Analyse and Report Cluster Randomised Trials in Medicine and Health Related Research by 
An Introduction to Epidemiology by 
Epidemiologic Methods by 
Design, Evaluation, and Analysis of Questionnaires for Survey Research by 
Designing and Conducting Survey Research by 
Handbook of Survey Methodology for the Social Sciences by Searching for sources that cover specific protocols for basic science research can be difficult if you have not been immersed in that area of research previously. There are several books and resources in the library collection that cover these types of protocols. To find them, the following searches in the Library Catalog may be a helpful starting point.
Experiments in the Purification and Characterization of Enzymes by 
Mast Cells: Methods and Protocols by 
Applied Qualitative Research Design by 
The Oxford Handbook of Qualitative Research by