When you’re searching the web for academic texts to support your arguments and ideas in essays and dissertations, don’t forget Google Scholar.
It’s a specialised search engine that only searches for academic writing.
How useful is that!
Read the Help page, and the Advanced Search Options page, and you will hone in on your desired texts really quickly.
Don’t forget to activate Zotero! … and have your Athens login handy!
Last word…. Don’t forget Google Books, too.