Google Scholar is a useful tool to find academic, scholarly, and/or peer-reviewed sources. However, many of the sources are only availalbe fulltext if you pay a costly fee, often times for about $30 at minimum. When you encounter these sources, note the citation information, and contact a GCC Librarian to see if it is available via the library. If the GCC Library does not own or cannot license it, use Interlibrary Loan get the source free-of-charge or at a very low cost in the case of books.
Below is the link to the form for Interlibrary Loan.