You can add references to Mendeley library automatically by exporting them from library databases, Google Scholar and more. 

Many Library databases allow options for exporting references in a format called RIS (.ris) type. You can then import the RIS file(s) into Mendeley. Here are the methods to export RIS file(s) from LibrarySearch, ProQuest database, and Google Scholar. 

1. Export references using LibrarySearch

Select the reference from LibrarySearch result, choose 'Export RIS' and select 'Download'.

2. Export references from library databases.

Most library databases will allow you to export references in RIS format. Usually you can export references by navigating to the 'Cite' function. Example below shows how to import references with ProQuest database. 

3. Export references from Google Scholar

Choose the 'Cite' option below each result in Google Scholar. Select 'RefMan' to download the .RIS file into your device.

After downloading these RIS files, you can then add them into your Mendeley library: Open Mendeley Reference Manager - select 'Add new' - 'Import file(s) from computer'. 

Useful tip: It is always a good practice to double check the details of references after you imported them into Mendeley.