This document provides guidance on finding credible sources for a climate change research proposal. It recommends beginning with Wikipedia for preliminary research and identifying other sources, then searching the library databases and secondary sources cited in key papers. The sources should include a variety of materials like books, articles, reports, videos and interviews to provide richness. The number and types of sources should be tailored to the specific research proposal topic and size. Credibility can be evaluated based on publication date, author expertise, and number of citations.