Most databases will produce citations for the articles that you find inside them. Sometimes you can generate a citation for each article as you find it. Sometimes you can create a list of articles you are interested in and have the database produce a list of citations like a bibliography. Every database works differently, so you will need to discover which method works best in the database you are using. The boxes below have some common examples.
When you have a list of search results in a database, you may be able to select all of the articles of interest (by checking boxes next to the title or by adding them to a folder) and then create a bibliography using a feature in the database.
(Example above is from Scopus.)
When you click on an article's title inside a list of database search results, you are taken to an individual record describing that article. There is often a "Cite" feature in the available tools.
(Example above is from Academic Search Premier.)