develop a reference list

This is a refining process.1. Find relative literature (if a search yeilds hundreds of items use MESH terms of other mechanism to reduce the topic).Once you find several articles that addrres the topic in a way you want, use their reference list to find similar research.
Read relavent articles and write down items like research questions ,method info (subjects, instruments, etc) to help refine your question and population.
Build your reference list and literature review to your more specific parameters.