Filters are basically limiters that you can apply after the search. These are especially useful during preliminary searches where large numbers of documents are retrieved. For example, the screenshots below show a keyword search for global warming. The search returns over 26,000 records. By using the filter options to the left of the search results we can specify a date range for the articles, require that they be peer reviewed, or even choose a particular subject area for our focus.
When you click on the Cite option, the citation for the article is displayed in various citation formats (see below). Just be aware that adjustments need to be made sometimes; for example, APA citation requires the first letter of the first word of the title (and the first word after a colon, if there is one) to be capitalized, but the rest of the title should be lowercase. Simply copy, paste into your references, and make needed adjustments - most of the work is already done!