When you synthesize multiple sources in a research paper, you create a conversation about your research topic. You show readers that your argument is based on your active analysis and integration of ideas, not just a series of quotations and paraphrases.
Your synthesis will show how your sources relate to one another; one source may support, extend, or counter the ideas of another. Readers should be able to see how each source functions in your argument.
Sample synthesis (APA)
Considering how sources relate to your argument
Placing sources in conversation
Functions of sources in a paper