Note: Finding high quality sources to support your research thesis, or argument, does take time. If you're able to pick the first five sources you find, you might need to narrow your topic. Your research thesis should ideally be saying something new to bring into a scholarly conversations. Therefore, finding sources can sometimes feel like putting a puzzle together.
Video above by: J. Watts et al., Kimbel Library, CC License: http://tinyurl.com/2t9all