Try starting your research with the resources available through the GU-Q library collection: they are reliable and authoritative and provide you with a wide range of options, from basic dictionaries to specialized research articles. Reach out to a librarian to help you with your literature review.
You will find plenty of resources about media and politics by conducting a simple search in the library homepage.
Focus your search results by entering your keywords in the Subject field in the Advanced Search in HoyaSearch. Here are two examples of subject searches:
Mass media -- Political aspects
Social media -- Political aspects
You can also browse the library shelves to find books. On the 2nd floor of the library, you will find books related to media and politics in the following range:
LC: P87‑96 (Subject: Communication. Mass media)