Quotations, summaries, paraphrases, and facts will help you make your argument, but they cannot speak for you. You can use several strategies to integrate information from research sources into your paper while maintaining your own voice:
Reviewing an MLA paper: Use of sources
Exercises:
Integrating sources in MLA papers 1
Integrating sources in MLA papers 2
Integrating sources in MLA papers 3
Integrating sources in MLA papers 4