Zotero allows you to collect and organize all of your references and quickly add in-text citations to your Microsoft Word / LibreOffice documents. You can also drag and drop your references into any word processor, an email message, a Google doc, or a blog post to automatically create bibliographies on the fly.
Microsoft Word / LibreOffice Integrations with Zotero:
Using Microsoft Word, click on the Zotero tab to view the Zotero Custom Toolbar.
To insert an in-text citation from your Zotero references into your document:
Zotero will insert the reference according to the citation style you have designated. Click OK and all of the items you've selected and their respective page numbers will be appear in the context of your document, as seen below.