You can import references from different reference management tools.
To import references from Mendeley:
For Zotero and EndNote, you will need to export references and import them to RefWorks.
Source: RefWorks User Guide > Managing References > Importing References.
You can install RefWorks Citation Manager (RCM) for Google Doc to access and cite references. By sharing your document with others who are using RCM for Google Docs, they can collaborate with you in writing and citing references at the same time.
For more detailed instructions, please refer to RefWorks Citation Manager (RCM) for Google Docs in RefWorks User Guide.