Welcome to Android Central! Which phone? It's unlikely that Google Books and Google Newsstand (which is very much outdated, by the way -- it's now Google News) are the main culprits, but you should be able to Disable them in
Settings>Apps, which should prevent them from opening, building up data, or updating in the Play Store.
If those apps are really pushing your phone's storage to the limit, then I'm guessing you have very little storage to begin with -- like around 16 GB, right? That's just not enough these days if you want to install any typical number of apps on your phone. It's time to upgrade your phone to something with at least 64 GB of internal storage.
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